Microsoft Windows Vista
RTM (Release to Manufacturing) Build 6000 x86 (32-bit) MSDN
As many of you may know, Windows Vista has been released to MSDN (Microsoft Developer Network) subscribers and select Connect beta testers. I am proud to bring you a legitimate MSDN DVD. Please take the time to read over and print these instructions before you attempt to install Windows Vista.
How to Install Windows Vista
Unplug your PCs Internet connection.
Turn on your PC (or restart if its already on) and boot into your BIOS (usually hitting the <Del> key before initialization; otherwise refer to your instruction manual).
Set the date to December 31, 2099 (December to prevent accidents from happening when setting the year back to 2099 for any reason; as Vista keeps the most amount of days you passed the time you installed it, so if you pass the 30 days after you install it and boot up Vista, it will remember that every time you reboot and not allow you to log on).
Save & exit the BIOS and install Vista, leaving the product key textbox blank and un-checking the Automatically activate Windows when Im online checkbox. (You can either burn the ISO file to a DVD using software like DVD Decrypter or mounting it to a virtual drive with DAEMON Tools [www.daemon-tools.cc].)
When Windows shows the time settings when youre setting it up, do not change anything (not even the time zone), just click Next and finish. Now Windows will test your system performance.
After it finishes, log on. Click on the time on your taskbar, click the Change date and time settings link, go to the Internet Time tab, hit the Change Settings button, and uncheck the Synchronize with an Internet time server checkbox. Then set your date back to today. Also, you can set the time zone to your own.
Plug in your PCs Internet connection and download updates as necessary.
Now the 30-day trial period will last until year 2099. You will not be able to activate Windows, but WGA still works and you can download anything from Microsoft just like a legitimate copy of Windows can. This trick goes the same for Windows XP. The activation status in System Information (Control Panel  System) will say 30 days.
Other Notes:
If you type slmgr.vbs -dli in the Run window, you will get a pop-up telling you how many minutes you have left. I have not been able to get it to 43200 minutes; much less get it frozen at 43200 minutes. (My suspicion is because after Vista finalizes the installation, my screen turns black with the mouse pointer still active. Then after about a minute my screen shuts off and the red LED on the front of my Microsoft optical mouse turns off until I click a button on it. I must push the reset button on my computer to get to the account setup screen.) Upon reboot, however, the timer resets itself to my maximum time (43190 is the time I see if I check it the second after I log on).
The reason I see 43190 minutes the most is because Windows remembers at most how much time I have ever gone after the 30 days at the time it boots up. I have set my date back to 17 days after I installed it in year 2099, and the system told me I had 17 days left. Even when I set my date back to 2006, it still counts down from 17 days every time I boot up. This is a changes will take effect when you restart your computer kind of thing.
Ive also included the BillGates ISO MSDN patch for users who already downloaded the BillGates ISO. If you havent, then just ignore it. If you have, but youre not sure if it is the BillGates version, you can use the MD5Summer tool (included in this folder, md5summer.exe) to check it. You can also check my ISO with the file [..\en_windows_vista_x86_dvd_X12-34293.md5] using the SHA-1 checksum type. (And while youre waiting, launch another md5summer.exe and check out the About window! I could stare at that maze for hours. )
BillGates ISO checksums
MD5: c7792c31aeea98be645ab295d35e8eef
SHA-1: b82590481755ba3420e7314bf82b8916a90963b5
MSDN DVD ISO checksums
MD5: 1008f323d5170c8e614e52ccb85c0491
SHA-1: b71e04564ca22e4d9928e59298eff87cf62b382b
Enjoy! 
- Timothy003