download and run this in the instructions box it will say x86-64 or emt64 (amd/intel) if its 64bit, if not its 32bit.
download cpu-z http://www.cpuid.com/download/cpu-z-138.zip extract it, open it,then where it says "instrucions" if it says EMT64T then it supports 64 bit if it doesnt say it then guess what? its 32bit lol marsey u beat me to it
no probably cause i installed vista x64 ultimate and i didnt have cpu-z so i dl it and opened to c where it said emt64t cause who knows i probably write faster than u