Ahem...
MULE!
Also, regarding XP/2000, are you guys aware that there exists a Compatibility mode in these two operating systems? All you have to do is right click on the file in question and click on the compatibility tab in the resulting dialog box. In some cases I think you have to create a shortcut to the file and then right click on the shotcut in order to get the compatibility tab but I'm not entirely sure. XP has this inherent capability but you have to upgrade Win2k to SP 2 or 3 and then run this command line:
regsvr32 %systemroot%\apppatch\slayerui.dll
This should add the compatibility mode. It doesn't work for everything but it works for a lot of stuff, most importantly Incubation (If you like X-COM you'll probably like this) and Darklands (I'm shocked and amazed that I didn't (or at least think I didn't) see anyone mention the king of CRPGs).