why you are looking for 478 socket? no idea of investing money in outdated hardware.Sell your 478pin CPU and move to cheap Intel G31+E5200/AMD M2A+Athlon X2 7750+
Don't sell it..........
U won't get even Rs.2000.........
Keep it with you under maintenance.
Show it off to people when socket 478 motherboards will no longer be available in the market. It will be like an antique treasure.