I have a laptop (Intel Core 2 Duo T6400 @2Ghz with 4GB of RAM). Nowadays, my main OS is Vista Home Premium (x64). My question is about which version of nod32 (v.3.0.684) is better for me: nod32 32bits or nod32 64bits. I think it's no necessary 64 bits version, but if both of them are stable versions and there are no difference about memory usage, I think the x64 version will work fine. Sorry for my poor english ;-) Thank you.