How to find that my processor is 32-bit or 64-bit in windows

If you have already install 64-bit operating system then it is easy to say that your processor is 64-bit. To check that.....

For Windows 7/Vista users:

i) Right click on My computer > select Properties.
ii) Check to see that your System type is 64-bit operating system under System info.





For Windows XP users:

i) Click on Start button > Run > type dxdiag and hit enter.
ii) DirectX