AMD X2 4200. Asus M2N-SLI Deluxe. 7600 GT video card. I am taking my MB, processor, ram, and gpu and scavenging the parts to build a new system for the kids. Currently running XP 32 bit with no problems. I once tried to upgrade to vista 64 bit but I had trouble with some drivers. I think that the main problem was the network bus enumerator drivers. I tried to get updated drivers from nvidia to fix the problem but it never worked out, so I went back to xp. Now I am building a new system for myself as well as reformatting this computer and I am going to purchase Windows 7. For my new computer I will use Win 7 64. Should I also get Win 7 64 for the older computer or am I likely going to have the same problems? Would getting Win 7 32 bit solve those earlier issues with the drivers? I built the computer a few years back and from what I remember the Athlon was supposed to be 64 bit/vista ready. Thanks.