Avoid SP2 at all costs...
http://support.microsoft.com/default.aspx?kbid=884130&product=windowsxpsp2
Gotta love Microsoft. It amazes me how many people stick by such a lousy operating system.
I am playing devil's advocate here.
Is SP2 mandatory? And if someone just uses their computer for word processing, faxing, surfing the internet but NO downloading or opening of email attachments, then is SP2 necessary?