I currently using 32-bit Win XP Pro but plan to upgrade to 64-bit Windows 7 (once it is released). I would like to know if my current system config is sufficient to run the OS. I have been using Windows 7 RC for sometime now and I have no problem but I don't know how my system performance will change once I go for 64-bit OS. I also would like to know if my existing 32-bit applications will work fine under 64-bit OS. Since my current system is a bit old (config is given under my signature) I am not sure if 64-bit drivers will be available for my system. Will I be able to use my existing Kaspersky Internet Security and iolo System Mechanic under 64-bit OS or will have to upgrade them to 64-bit versions too? And how will the performance of my existing games change under 64-bit OS?