Alright, this method takes some tinkering with your graphics card, if you feel like "risking" it, feel free to edit it's settings, but don't attempt if you don't know what everything does, I'm not holding myself liable for anything YOU might fuck up,
these instructions are way too simple.
Alright, so first off, you're probably wondering "How much will this actually increase my FPS rates?":
Well, let me start off here, how it works is simple:
Every game has a default FPS to run at, wether you have a shit GC or a 7800, it's going to cap you off at the default FPS of the game. i.e. CS is 60, DoD:S is 40, GW is 50, etc.
Now if you're like me, you'll dislike those rates (FPS/loss/choke) that you get while playing. There's a simple way to fix this, it's a setting on your Graphics Card called 'vsync', 'what does this do' you may ask? Simple, vsync is basically what reads the defaults from the game on what FPS to cap off at, now, by default, it should be set to 'Automatically Read From Game', this is exactly what you don't want, so uncheck it and make sure the scroll bar (or option) is set to 'Off'. Apply the settings and close out of the thing. This will not take effect emedietly, you need to first restart whatever game you're playing for this to kick in. Now, based on what card you're using, your rates should increase a very, VERY huge amount. This is what I got in some games after applying this:
Kal Online:http://www.thesickempire.net/screenor/YESFPS.jpg(Note: My FPS used to be 10-20, now it's a steady 80+)
CS 1.6 (With a hack on, to put as much stress on the FPS as possible):http://www.thesickempire.net/screenor/YESFPS2.bmp(Note: My FPS used to be 60, now stays a perfect 99-100)
Same goes with CZ, Source it goes to 150.
GW now hits 120 steady.
Again: This relies on how good your graphics card, if you're using an old 5200 or something of the sort, chances are this wont improve much, sorry.