For Vista or most gaming you want a separate video, not the integrated Intel chip. Dell allows you to choose a 256MB GeForce 7400 (which is just ok by desktop standards, but is much better than i950) on the XPS M1210, which is the direction that I'd be heading if I had 2K for a laptop.
Intel® Core™ 2 Duo T7200 (2.00GHz, 4MB L2 Cache, 667 MHz FSB), Windows® XP Professional, free upgrade to VISTA Business, integrated Webcam and Mobile Broadband Antenna, 2GB Dual Shared Channel DDR2 SDRAM at 667MHz (2 Dimms), 100GB 7200RPM SATA Hard Drive, 8x CD/DVD burner (DVD+/-RW) with double-layer DVD+R write capability, VIDEO CARD 256MB NVIDIA® GeForce™ Go 7400 TurboCache™, integrated Audio. 1 Yr warranty, $2035, around 4.4 pounds.
I will note that I hate the way that Dell sells the computers (am I a home office, small business .. WTF??) but I have been happy with the reliability and service that I have received.