Tuts for 64bit pc's

[cj62896]

I was able to get servers together on my old 32 bit computer, but ever since I upgraded I havent been able to run any or get any online, so I was hoping someone would be able to help with this problem. The specs on my computer are a 512mb GeForce 9500 Video Card, 2-2GB DDR3 RAM, AMD Athlon II x4 635 processor(quad core). And I cant remember much about my motherboard but it's pretty much what I have. Also it's a desktop. So if you could make a tutorial for 64 bit users it would be greatly appreciated.