Run an ISO image (and others) without blowing a DVD

You want to install a program from a downloaded ISO image directly - you've run out of blank DVDs, feeling green, just dont have the time: this enables you to convert your physical CD/DVD discs into "virtual discs" so called "images". Supported formats:

• Standard ISO
• Media descriptor MDS, MDX
• Blind read, write B5T, B6T, BWT
• Cloned CD CCD
• Cue sheet CUE
• Compressed ISO ISZ
• Nero NRG
• Instant CD, DVD PDI
• Disk Juggler CDI

Here is a free tool (there are also paid versions with different licensing or more facilities).

The entire set of Sysinternals Utilities rolled up into a single download.

• AccessChk is a command-line tool for viewing the effective permissions on files, registry keys, services, processes, kernel objects, and more.
• AccessEnum is simple yet powerful security tool shows you who has what access to directories, files and Registry keys on your systems. Use it to find holes in your permissions.
• AdExplorer is an Active Directory Explorer is an advanced Active Directory (AD) viewer and editor.
• AdInsight is a LDAP (Light-weight Directory Access Protocol) real-time monitoring tool aimed at troubleshooting Active Directory client applications.
• AdRestore to undelete Server 2003 Active Directory objects.
• Autologon to bypass password screen during logon.
• Autoruns: See what programs are configured to startup automatically when your system boots and you login. Autoruns also shows you the full list of Registry and file locations where applications can configure auto-start settings.
• BgInfo a fully-configurable program automatically generates desktop backgrounds that include important information about the system including IP addresses, computer name, network adapters, and more.
• BlueScreen a screen saver not only accurately simulates Blue Screens, but simulated reboots as well (complete with CHKDSK), and works on Windows NT 4, Windows 2000, Windows XP, Server 2003 and Windows 9x.
• CacheSet is a program that allows you to control the Cache Manager's working set size using functions provided by NT. It's compatible with all versions of NT.
• ClockRes views the resolution of the system clock, which is also the maximum timer resolution.
• Contig to quickly defragment your frequently used files? Use Contig to optimize individual files, or to create new files that are contiguous.
• Coreinfo is a new command-line utility that shows you the mapping between logical processors and the physical processor, NUMA node, and socket on which they reside, as well as the cache's assigned to each logical processor.
• Ctrl2cap is a kernel-mode driver that demonstrates keyboard input filtering just above the keyboard class driver in order to turn caps-locks into control keys. Filtering at this level allows conversion and hiding of keys before NT even "sees" them. Ctrl2cap also shows how to use NtDisplayString() to print messages to the initialization blue-screen.
• DebugView intercepts calls made to DbgPrint by device drivers and OutputDebugString made by Win32 programs. It allows for viewing and recording of debug session output on your local machine or across the Internet without an active debugger.
• Desktops enables you to create up to four virtual desktops and to use a tray interface or hotkeys to preview what's on each desktop and easily switch between them.
• Disk2vhd simplifies the migration of physical systems into virtual machines (p2v).
  DiskExt to Display volume disk-mappings.
• Diskmon captures all hard disk activity or acts like a software disk activity light in your system tray.
  DiskView is a Graphical disk sector utility.
• Disk Usage (DU) to View disk usage by directory.
• EFSDump to View information for encrypted files.
• Handle is a handy command-line utility will show you what files are open by which processes, and much more.
  Hex2dec to convert hex numbers to decimal and vice versa.
• Junction creates Win2K NTFS symbolic links.
• LDMDump to dump the contents of the Logical Disk Manager's on-disk database, which describes the partitioning of Windows 2000 Dynamic disks.
• ListDLLs lists all the DLLs that are currently loaded, including where they are loaded and their version numbers. Version 2.0 prints the full path names of loaded modules.
• LiveKd uses Microsoft kernel debuggers to examine a live system.
• LoadOrder to see the order in which devices are loaded on your WinNT/2K system.
• LogonSessions to list the active logon sessions on a system.
• MoveFile allows you to schedule move and delete commands for the next reboot.
• NTFSInfo to see detailed information about NTFS volumes, including the size and location of the Master File Table (MFT) and MFT-zone, as well as the sizes of the NTFS meta-data files.
• PageDefrag to defragment your paging files and Registry hives.
• PendMoves to enumerate the list of file rename and delete commands that will be executed the next boot.
• PipeList displays the named pipes on your system, including the number of maximum instances and active instances for each pipe.
• PortMon to monitor serial and parallel port activity with this advanced monitoring tool. It knows about all standard serial and parallel IOCTLs and even shows you a portion of the data being sent and received. Version 3.x has powerful new UI enhancements and advanced filtering capabilities.
• ProcDump for capturing process dumps of otherwise difficult to isolate and reproduce CPU spikes. It also serves as a general process dump creation utility and can also monitor and generate process dumps when a process has a hung window or unhandled exception.
• Process Explorer to find out what files, registry keys and other objects processes have open, which DLLs they have loaded, and more. This uniquely powerful utility will even show you who owns each process.
• Process Monitor to Monitor file system, Registry, process, thread and DLL activity in real-time.
• ProcFeatures reports processor and Windows support for Physical Address Extensions and No Execute buffer overflow protection.
• PsExec to execute processes on remote systems.
• PsFile to see what files are opened remotely.
• PsGetSid displays the SID of a computer or a user.
• PsInfo to Obtain information about a system.
• PsKill to Terminate local or remote processes.
• PsList to show information about processes and threads.
• PsLoggedOn to show users logged on to a system.
• PsLogList to Dump event log records.
• PsPasswd to change account passwords.
• PsService View and control services.
• PsShutdown shuts down and optionally reboots a computer.
• PsSuspend to suspend and resume processes.
• PsTools includes command-line utilities for listing the processes running on local or remote computers, running processes remotely, rebooting computers, dumping event logs, and more.
• RAMMap is an advanced physical memory usage analysis utility that presents usage information in different ways on its several different tabs.
• RegDelNull to Scan for and delete Registry keys that contain embedded null-characters that are otherwise undeleteable by standard Registry-editing tools.
• RegJump to jump to the registry path you specify in Regedit.
• RootkitRevealer to scan your system for rootkit-based malware.
• SDelete to securely overwrite your sensitive files and cleanse your free space of previously deleted files using this DoD-compliant secure delete program.
• ShareEnum to Scan file shares on your network and view their security settings to close security holes.
• ShellRunas Launches programs as a different user via a convenient shell context-menu entry.
• Sigcheck is for Dump file version information and verify that images on your system are digitally signed.
• Streams Reveals NTFS alternate streams.
• Strings to search for ANSI and UNICODE strings in binaryimages.
• Sync to flush cached data to disk.
• TCPView is an active socket command-line viewer.
• VMMap is a process virtual and physical memory analysis utility.
• VolumeId to set Volume ID of FAT or NTFS drives.
• Whois see who owns an Internet address.
• WinObj is the ultimate Object Manager namespace viewer.
• ZoomIt is presentation utility for zooming and drawing on the screen.

Are all available here. (you may need a windows live ID to access)