TweakNT  -WiNBETA by ibi and bophoe

TweakNT is a utility that allows you to remove the timebomb and change the edition of any NT OS.

It should be fairly self-evident how to use it, if it isnt, I would suggest you don't even try, 
as you'll most likely break something.

Notes:
Timebomb is not the same as WPA, timebomb is usually present in betas, and is normally somewhere 
between 120 and 360 days.
If there is a timebomb, the build will always be shown on the desktop, consequently, removing 
the timebomb will remove the build from desktop (unless you specify it to always show)

Converting can render your OS completely unusable, do not touch this unless you know what you're 
doing.
Obviously, You can't convert Windows 2000 to web server, as it doesnt exist, these are for .net
but the basic "ntswitch" will work on all versions of NT.

All changes made by TweakNT are reversible (apart from restoring the timebomb), though in some cases
you may not be able to get to a point where you can run TweakNT to reverse the changes, if this happens
you will need to restore the backup of the registry created by TweakNT.  You will be told the location 
of this file after the backup is created.

TweakNT requires vb6 runtimes, if you are using 2000 or NT, you may need to install these.