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 "PRECESSOR_ARCHITECTURE"
If you get ADM64 back (or something similar with 64 in it) you are running on a 64-bit processor, and would be able to install and run for example Windows 7's 64 bit OS. If you get something like x86 you are running on the older 32-bit architecture.
