[Vaanish]

I would go for:

Newegg.com - FSP Group FSP400-60THN-R ATX 2.0 400W Power Supply 115V/ 220 - 240V NEMKO, TUV, CSA, IEC, UL, CE - Retail

Newegg.com - Kingston HyperX 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Desktop Memory - Retail

Newegg.com - Intel Pentium E2140 Allendale 1.6GHz 1MB L2 Cache LGA 775 65W Dual-Core Processor - Retail

Newegg.com - MSI P31 Neo-F LGA 775 Intel P31 ATX Intel Motherboard - Retail

Newegg.com - MSI RX2600XT Diamond Radeon HD 2600XT 256MB 128-bit GDDR4 PCI Express x16 OC Edition HDMI HDCP Ready CrossFire Supported Video Card - Retail (good price after rebate)

Newegg.com - SAMSUNG SpinPoint T Series HD501LJ 500GB 7200 RPM 16MB Cache SATA 3.0Gb/s Hard Drive - OEM

Newegg.com - SAMSUNG Black 20X DVD+R 8X DVD+RW 16X DVD+R DL 20X DVD-R 6X DVD-RW 12X DVD-RAM 16X DVD-ROM 48X CD-R 32X CD-RW 48X CD-ROM 2MB Cache SATA 20X DVD±R DVD Burner with LightScribe - OEM

Which will basically destroy the GeForce 6600/Pentium D