If budget is your concern, i'd stay with socket 940. Its slightly older but is still decent and will support your ide hard drives if you want to keep them (all the am2 boards i looked at have one ide channel, which will probably be used by your dvd drives.)
My favorite place to shop is
Canada Computers I'm not sure if they have a location near you and they probably dont have the absolute lowest prices, but since theres a retail outlet near me i prefer that site over shopping over the internet.
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