If your going to use your old cpu you will have to stick to 478pin
mobo. Go here
www.pricewatch.com shop around. Dont get a pc
chips mobo, foxconn, ecs, soyo,. Ive had good luck with asrocks, asus,
biostar, tyan, gigabyte, abit, intel. When choosing a board you will
want a 800mhz fsb capablity, as that is what your cpu is supposed to
support.
From what ive seen briefly you can do the mobo and ram for around
200 bucks, tops, but that is you doing the labor.