Ya - I'm seeing that there are both versions. Haven't kept up with the specifics so always thought it would all be 64 bit. Finally bought a copy of XP Pro with the upgrade coupon (my old copy of XP had gone over the 10 installs and it was getting to be a pain calling MS for every new install and downloading SP2 and updates).
I had thought that the 64 bit driver issue was pretty much resolved - it would just take individual research to find what you needed for your specific components. Haven't really kept up with the most recent info - just ocassionally reading some posts about the beta versions, even downloaded a few of them but never loaded it since it seemed it was something better left to those with more active brain cells than me.
Anyway - I'm just shocked to see that there are 2 versions. After reading dasickninjas' sticky, glad there are since some of my basic mobo drivers are only available in 32 bit.