CP-128-IN Intel Core 2 DUO E6600 "LGA775 Conroe" 2.40GHz (1066FSB) - Retail (CP-128-IN)
A good processor but a overclocked e6300 will be nearly as good and a lot cheaper.
CD-030-NE NEC ND4570 16x16 DVD±RW Dual Layer ReWriter (Black) - OEM (CD-030-NE)
Sounds good, i just chose the first black nec i saw
HD-046-WD Western Digital Caviar SE16 250GB 2500KS SATA-II 16MB Cache - OEM (HD-046-WD)
Thats what i have in my pc and its good. a lot of people also recommend the seagate. I chose you the smallest, but like i said go for 250gb if you thin you will need it.
HD-095-WD Western Digital Raptor 36GB WD360ADFD 10,000RPM SATA 16MB Cache - OEM (HD-095-WD)
Do you really need a raptor? Expensive considering you want it for office and the occasial game.
MB-176-AS Asus P5B-VM Micro ATX (Socket 775) PCI-Express DDR2 Motherboard (MB-176-AS)
Havent heard much about this board so can't really comment. For a e6300 i would get a ds3, and for a e6600 i would get an ds4 or an asus P5B Deluxe
MY-034-GL GeIL 2GB (2x1GB) PC5300 667MHz Value DDR2 Dual Channel Kit (GX22GB5300DC) (MY-034-GL)
Good ram but if you wanted to overclock i would go for the 6400 version.
CA-040-AN Antec Sonata II Piano Black Quiet Case - 450W Smart Power PSU (CA-040-AN)
Personal choice really. I just like the pc7 as its black and aluminium. The antec does have the benifit of comming with a psu.
GX-080-XF XFX GeForce 7600 GS 256MB DDR2 TV-Out/Dual DVI (PCI-Express) - Retail (PVT73P-UDL3) (GX-080-XF)
The x1800xt is a much better card, and is probably the best bang for buck avaliable at the moment.
MO-017-OK OcUK Value Hanns-G HW191D 19" Widescreen LCD Monitor - Silver (MO-017-OK)
Again personal choice really, i just like the bezel of the belinea more.
Hope that helps a little! Any more questions fire away. Also will you be intending to overclock or not?