The latest kitserver allows you to change the aspect ratios now so you can now change the resolution to 1680x1050 and get the correct aspect.
Also for us using Vista x64 and 4gb RAM it also sorts out the problem with no being allowed to select high graphic details.
Ive just installed the latest kitserver, created my own config file with the correct resolution and aspect ratio and its now playing in all its glory on full resolution on my 22" Panel
Heres a link to the forum for people that are struggling abit with kitserver.
http://www.evo-web.co.uk/forums/showthread.php?t=43418&page=12
You need to register to be able to read posts on there, but its a 2 second job.