Goal:
FInd out if you are runing on a 64-bit Processor
Answer:
Go to the command prompt (type cmd int the Start -> Search box)
type the follownig command: set | find "PROCESSOR_ARCHITECTURE"
If you get ADM64 back (or something similar with 64 in it) you are running on a 64-bit processor, so you would be able to run Windows 7's 64 bit OS. If you get something like x86 you are running on the older 32-bit architecture and will not be able to run a 64-bit OS.