Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.
I would say 32-bit SP2 at the moment, as it has the most support of all of them (drivers, apps) and would be most suited to gaming at this particular point in time, if that is in fact what you plan on using it for. 64 bit XP would only allow you a few advantages over 32 bit XP at this point, mainly with things like more RAM allowed, etc. Where you lose when going to 64 bit XP is in driver support, and even application support sometimes. So, it's your choice, but I would recommend 32-bit SP2.