well, it is socket A, and it take ddr400 ram, has a 333/266/200 MHz FSB, and has an agp slot.
http://www.newegg.com/Product/Product.asp?Item=N82E16813185074 is the only board that would work.
the process isn't that hard. It is a matter of removing some screws, and being careful.
what makes you want to get a new mobo anyways?