There's a Microsoft Office 2000 (office suite- software) and a Windows 2000 (operating system), I take it that it's a Windows 2000 system. You can upgrade it to WinXP, but XP will be a lot slower than Windows 2000. You can still keep Windows 2000, Microsoft still supports it and it's the most used operating system in the world.dapoet said:het thanks for the reply i have windows office 2000 professional on it at the moment and want to put on xp home edition do ya think i can just put it on?