[EXreaction]

CORSAIR ValueSelect 1GB (2 x 512MB) 240-Pin DDR2 SDRAM Unbuffered DDR2 533 (PC2 4200) Dual Channel Kit System Memory - Retail $65

FSP Group (Fortron Source) AX400-PN ATX12V 400W Power Supply 115/230 V NEMKO, TUV, CSA, IEC, UL, CE - Retail $40

And for a graphics card either:
POWERCOLOR R43CA-GD3D Radeon X800GT 256MB 256-bit GDDR3 PCI Express x16 Video Card - Retail $161
OR:
PNY VCG6600GXPB Geforce 6600GT 128MB 128-bit GDDR3 PCI Express x16 Video Card - Retail $109 After a $40 MIR

I would get the 6600GT...since it is much cheaper...