Try this build (no time for links, sorry!):
Q6600 Retail
Corsair TX750
Antec Three Hundred
GeIL Black Dragon, PC6400 4GB kit
Tuniq Tower 120 (LED version is £7 cheaper)
Powercolor 4870
Asus P5Q Pro
Western Digital WD6400AAKS
OcUK Value L2442WD-VA
I think that would work out at a similar price, as well as being quicker, and with a bigger display. The DVD writer that you have selected in there seems to be fine, most of them are pretty good anyway.