After some great feedback I am down to these choices, forgetting about the memory and graphics card for the time being. So please give me your opinions:
Intel Boxed (Prescott) Pentium P4 3.4E Socket T LGA775 Socket, 1MB on-die cache, 800FSB Proccessor 550 Retail Box - BX80547PG3400E with a Asus P5AD2-E Premium 925X P4 1066FSB LGA775 DDR2 ATX Motherboard w Audio, Dual Gigabit LAN & RAID
AMD Athlon 64 FX-53 939 (2.4GHz) Processor with a ASUS A8V Deluxe motherboard.
Pentium 4 640 3.2GHz 800MHz FSB, 2MB L2 Cache Processor w/ Hyper Threading Technology along with the GIGABYTE "GA-8I915P Duo Pro(REV 1.1)" 915P Chipset Motherboard For Intel LGA 775 CPU.
I am leaning towards the third choice but am having trouble finding any reviews for the Gigabyte mobo.
This is a multimedia and occasional gaming machine described in my earlier post.
Once again thanks for the help, I am sure that once I start construction there will be other questions, but I hope not too many.