You'll need to check the CPU model number - post it here, or check with Intel.

Intel Pentium D 830 (3.0GHz) w/ dual core technology is what I have in the original documentation, is there a model number other than that? Thanks.

http://ark.intel.com/Product.aspx?id=27513

should answer a question or two about 64bit compat :)

rjn02,

Thank you for contacting the Dell Community Forum.  I wasn't able to find a Dell BIOS compatibility list, but your system should support a 64-bit operating system.  Windows 7 usually works best with the latest BIOS version, which is A04.  Since you are running A02, I would suggest updating to the latest BIOS (which can be obtained here), prior to installing that OS.

I've never updated a BIOS, but have read it can be risky? If I do update, is there any aspect of this that I need to especially careful with? Thanks.

If I'm interpreting correctly, the processor is good for 64 bit. Thank you!

Intel does have a disclaimer though mentioning support for 64 bit is subject to BIOS compatibility with 64 bit. Does Dell have a reference source by which this can be determined? The version on my BIOS is A02, 5/24/2005.

Thanks again.