Upgrade for my brother

[Monkey]

20x Samsung TSH653B 20X SATA DVDR-W Black (https://www.aria.co.uk/Products/Components/CD%2FDVD+Drives/Internal/SATA/20x+Samsung+TSH653B+20X+SATA+DVDR-W+Black+?productId=33225)
Intel Core 2 Quad Q6600 2.4GHz 95W G0 Stepping (Retail 775) (https://www.aria.co.uk/Products/Components/CPUs+%2F+Processors/Intel/Core+2+Duo/Intel+Core+2+Quad+Q6600+2.4GHz+95W+G0+Stepping+%28 Retail+775%29+?productId=28356)
160GB Samsung Spinpoint SATA2 8MB (https://www.aria.co.uk/Products/Components/Hard+Drives/Serial+ATA/160GB+Samsung+Spinpoint+SATA2+8MB+?productId=27006 )
500Gb Hitachi SATA-2 P7K500 Hard Drive- 16MB (https://www.aria.co.uk/Products/Components/Hard+Drives/Serial+ATA/500Gb+Hitachi+SATA-2+P7K500+Hard+Drive-+16MB+?productId=31456)
GeIL 4GB PC2-5300 C5 Black Dragon (2x2GB) (https://www.aria.co.uk/Products/Components/Memory/DDR2/DDR2+667+%28PC5300%2F5400%29/GeIL+4GB+PC2-5300+C5+Black+Dragon+%282x2GB%29+?productId=29675)
XFX GeForce 8800GT Alpha Dog 512MB PCI-E (https://www.aria.co.uk/Products/Components/Graphics+Cards/PCI-E/nVIDIA+GeForce+8+Series/XFX+GeForce+8800GT+Alpha+Dog+512MB+PCI-E+?productId=31909)
ASUS P5B-MX/WIFI AP i946GZ Socket 775 Motherboard (https://www.aria.co.uk/Products/Components/Motherboards/Socket+775+%28Intel%29/ASUS+P5B-MX%2FWIFI+AP+i946GZ+Socket+775+Motherboard+?produc tId=30784)
Xilence 480W Gaming PSU (https://www.aria.co.uk/Products/Components/Power+Supplies/450w+to+499w/Xilence+480W+Gaming+PSU+?productId=19869)

Just wondering what you all think, i just put it together two seconds ago

My main concerns are the mobo and PSU.

Any thoughts?