Microsoft Windows 2000
Microsoft Windows XP
Microsoft Server products
Linux
SCO Openserver
If you really, really want Vista, we can provide you with that. A computer should be about making your life easier, not an exercise in making money for Microsoft and Intel. Glamour and glits is OK but if it is to the expence of efficiency, I do not want it. Fortunately Windows 7 seems to be much bestter. This is what Vista was suppose to be.