The cool folks over at ADTW have discovered a small utility called NTSwitch that can be used to fool Windows .NET Server betas into thinking that they are plain Windows XP client systems
NTSwitch applies some small changes to the registry and after a reboot, your Windows .NET Server will look just like any other Windows XP client (apart from the build number of course)... The tool will not "downgrade" or disable any features of Windows .NET Server, but it will allow you to install applications that can normally not installed in a server environment (i.e. Norton AntiVirus 2002)
Note: Upon further testing, we have determined that this does cause a nasty memory leak when taking XP Pro Workstation to XP Pro Server. Convert this OS at your own risk , however all other NT OS"s are fine.