v2.2.2 has been the best so far IMO. Ive been using it since day1, I tryed without it, and my system was slower, the drivers are faster as they have special optimisations that Microsoft didnt include in the drivers that ship with XP.
Id recommend ANY Intel PC to have it running.
1 website I do know that lists it has been round for yrs, and they know what they are talking about, they recommend it. The site is "TechSpot", formally "3D Spotlight" they also get all the latest XP/2000/ME/98 security/system updates, so you can download and keep them, rather than going to MS update site. They even tell you which order is best to install them in! Great site.