I have a Dell Deminsion 8300, which is running the 75GB hard drive it came with.  I have ugraded the memory to 4gb (2x2gb) ram, and the video card to an ATI all-in-wonder 9600 series.  I want to install another hard drive (160GB), and install Windows 7 on it.  I was wondering if the deminsion 8300 could support Windows 7 64-bit OS or if I should try the 32-bit.  I plan on keeping the Windows XP on the original hard drive.   I would greatly appreciate any help, and if you need any further information I would be glad to provide it.

Thanks