What types of processors will my board take?

Intel says it will support Pentium-D processors and Pentium 4's with HyperThreading: http://www.intel.com/products/chipsets/865g/index.htm

Pentium-D cpus: http://www.intel.com/products/processor/pentium_d/index.htm

Pentium4 HT cpus: click on processor number details http://www.intel.com/products/processor/pentium4/index.htm

I read that much on Intel's site.  However I couldn't find where it told me the exact processors that would work with my board, i.e. with the SPEC number.

"... All Pentium-D's are possible candidates ..." ==> Obviously this is not true if it's a Socket 478 board.

GTKINC --> to fully answer this question we need the exact make/model of your motherboard.

As an example of what CPU's are PROBABLY supported by an 865G board:

Here's a list of the processors supported by the 865G chipset on Intel's Socket 478 D865GBF board:
http://www.intel.com/design/motherbd/bf/bf_proc.htm

Here's a list of the processors supported by the 865G chipset on Intel's Socket 775 D865GSA board:
http://www.intel.com/design/motherbd/sa/sa_proc.htm

Yep - I realized the socket info was needed at the end, without thinking about what I had just typed at the beginning, before the revelation (I should have edited it while I had the chance, but I got busy at work).

Sorry for the long delay.  The boards exact model number is 865gbflk

I'm splitting the points and gary's end is higher becuase his last post was dead on.  Thank you both for your time and efforts.

You're most welcome.