Right like i said, the 27inch screen has the same res as a 24inch screen. Go for this monitor.
http://www.overclockers.co.uk/showproduct.php?prodid=MO-009-DE
Fantastic screen.
You dont need 8GB of Memory. 4GB will be plenty.
Also do you know the diffrence between Vista Ultimate and Home Premium?
Microsoft Windows Vista Home Premium 64-Bit Edition DVD
Dell Ultrasharp 2407WFP 24" Widescreen LCD Monitor - Midnight Grey
Intel Core 2 Quad Pro Q6600 "LGA775 Kentsfield" 2.40GHz (1066FSB) - Retail
Tuniq Tower 120 CPU Cooler
Abit IP35 Pro (Socket 775) PCI-Express DDR2 Motherboard
G.Skill 4GB DDR2 PQ PC2-6400C5 (2x2GB) CAS5 Dual Channel Kit
BFG GeForce 8800 GTX OC 768MB GDDR3 HDTV/Dual DVI (PCI-Express) - Retail
Western Digital Caviar SE16 500GB 5000AAKS SATA-II 16MB Cache X2
Creative X-Fi Xtreme Gamer Fatal1ty Professional 7.1 Soundcard - Retail
Asus DRW-1814BLT 18x18 DVD±RW Serial ATA Dual Layer Lightscribe ReWriter
Corsair HX 620W ATX2.2 Modular SLI Compliant PSU
Akasa Eclipse 62 Aluminium Case - No PSU
Razer DeathAdder Blue 2000dpi High Precision Gaming Mouse
Logitech G15 Gaming-Grade Illuminated Keyboard - Retail
Acoustic Energy Aego M 2.1 Speakers (White) - Retail
Total : £2,030.15