Here are some tips on improving urban terror and system performance in general.Outside of Urban terrorGet omegadrivers for your ATI or Nvidia video cards OmegaDrivers.net (Ive used them for years with very little issues and major performance gains)
At the very least update yours with offical drivers from Nvidia.com or ATI.com
Update your chipset drivers (Most people dont) Can improve graphics speed and system speed all around.
Especially if your video card is in PCI mode when its an AGP card or your Harddrive is not using DMA.
This will require a little googling.
Download
http://majorgeeks.com/download181.html (AIDA32) If you dont know what chipset you have. It provides all kinds of hardware information that is useful for driver hunting and tweaking.
Most chipset makers provide a "Unified Driver" That will auto install the drivers for your chipsets.
Once you use Aida32 and know your Chipset google it. Example "SIS Chipset Drivers"
Defrag doesnt make much difference unless your harddrive is terrible but do that once or twice a year ;P
You might even consider overclocking but its not for the Avg Joe. This program works with ATI and NVIDIA cards and maybe others. You CAN burn up your card but its unlikely. Good idea to add fans or improve cooling to your card. But this program is basically overclocking for dummies.
http://www.techpowerup.com/atitool/*Update*My Brother in law told me about a program to tuneup services in Vista/Windows 7
Has Gaming mode to disable them temporarily.
http://www.snapfiles.com/get/vsoptimizer.html
Game Booster (Good especially if your on a family computer because it restores services when you done gaming)
Can help you to get better performance from your PC while playing resource intensive games. The program accomplishes this by shutting down a series of Windows background services that are normally not needed during game play, cleaning RAM, and intensifying processor performance. Once you are finished playing your game, simply click a button to restart all the services and regain full functionality for regular PC usage.
http://www.snapfiles.com/downloads/dlgamebooster.htmlAnother program i really like is called Starter found here.
http://www.snapfiles.com/get/starter.htmlWith few exceptions it will stop all the stupid programs that load up in the taskbar at bottom right of screen. It will also let you disable windows services much faster than service.msc
Inside Urban TerrorTurn off Vertical sync under system in game.
On really slow Video cards turning off all the extras under game options can add FPS and also improve your play. You might not notice as much as I do but Blood off and other things clean up my view and help me keep my target in sight in a frantic gun fight.
(side note)
I use a Dot for my crosshair with a size of 20 and color GREEN. Looks like a dead LCD pixel and i think it shows up on just about any color well.
Not much here but if it helps even 1 noob ill be happy. I hate everyone* telling me they get 20fps.. It hurts. Ive been there. I Did most of my Quakeing on 28.8k Modem and a Nvidia 16mb Card and then a Geforce 32mb for Quake3. : ) And those were the days before unlag code.
If anyone wants help reply and I or someone else will see what we can do.
Another thing that may slow your system down is AntiVirus.. OR a virus.. They both can suck resources. If your antivirus will let you.. Try disabling residential scan and or making sure your scans are scheduled @ a time when your afk.