You probably came to this article because you clicked on a link like one of the following:

• How do I use the Windows Services control panel?
• What's the difference between x32, x64, and IA64 systems, and how do I tell which I have?
• How do I know if I have full administrative privileges?

Explaining these technical aspects is beyond the scope of these pages, and it's not a good idea for you to proceed with your installation or upgrade without a basic understanding of these concepts.

We suggest you contact your local technical support provider, and enlist their help.

If the only piece of information you need is "am I running 32-bit or 64-bit windows," here's a Microsoft page that answers that question:

http://windows.microsoft.com/en-us/windows7/find-out-32-or-64-bit