You can upgrade to the 64-bit version down the road for a price. I would recommend purchasing the 64-bit version initially especially since it's the same price. When you upgrade your motherboard, you don't have to reformat your HDD, but it is recommended.

So what can I do to the 32-bit version if I do happen to buy the 64-bit version.

The 64bit version will essentially allow you to use more than 4GB of system memory, the 32bit version is limited.

I know that's why I wanted to get it in the first place. But to get it I had to buy the retail version which was too expensive for me back then. Now since they have the 64-bit OEM version at the same price I feel like I wasted my 32-bit.

@Warmacblu Just to tell you, to get the 64-bit version 1.75 years ago. You had to get the retail pack which was too expensive for me. Now they do sell the 64-bit OEM. So the price has dropped drastically, and since I was going to upgrade my computer to beyond 4GB I wanted to conserve as much as I could

The retail copy should include both the 32bit and 64bit discs inside the packaging with one license. The OEM copies sell each 32bit and 64bit flavors individually. With the retail versions you can only choose to install either the 32bit or 64bit disc with the license key, you cannot use one version on one computer and the other version on another.

Okay, thanks guys. I guess I'll have to go get a copy of Windows 7 64 bit. I wonder what I can do with the old Windows 7 32-bit