Killer Notebooks Executioner
core 2 duo 2.0ghz
2gb system ram
512mb geforece go 7900GTX
100gb 7200rpm drive
17" 1400 * 900 LCD screen.
This notebook rocks, the chasis is made by Clevo and this same rig can be purchased by many other builders. I recommend checking out killer notebooks as they are well priced and his customer service is second to none.
If you want a machine with a smaller footprint then check out http://www.killernotebooks.com/kodachi/kodachi_preview.aspxhttp://www.killernotebooks.com/wakazachi/wakazachi_custom_configuration.aspx
I know that vista ran smootlhy on the wakazachi when mark installed it, seeing as the kodachi is the same system in smaller case it should work for that too.
I think the big thing for vista is video ram, and 256 is the least you probobly want to run the new interface smoothly. at least 1gb system ram is definetly a must as vista is a diabolic memory monster.