You'll want that fan turned on, or when it gets a 3d load it'll really heat up. If you don't have an available fan plug, use this:

http://www.sidewindercomp..s.com/akakcaadfor4.html

is it rlly?
cuz im playing Battlefeild Bad company 2 and it heats up to 68 C
and the frame starts to glitch

its running at 90 percent fan speed now

so is a ATI radeon X1950 XT better than a Nvidia Geforce 220?

yeah
but i mean someone said the GT 220 is better than the Ati x1950 XT?
so why use it if its worse?

wich is better in your guy's opinion

Ati Radeon X1950XT OR Nvidia Geforce GT 220?

You GPU takes precidence as it will overheat much more quickly than the case as a whole; your system can live without the rear casefan running, your GPU may not.  Only if you had a large heatsink such that the extra mteal fin surface area made up for a lack of active circulation, for instance from passive or ambient circulation already in the case from other coolers, would you not need a fan. 
 
But you definitely neeed a heatsink of some kind.  The die itself is too small a surface to get rid of the heat itself, the whole point of the heatsink is to increase that heat dissipation surface area as the heat pressure conducts through the sink.
 

raz3r_a99
Ati Radeon X1950XT OR Nvidia Geforce GT 220?

Lower end doesn't progress that quickly since those folks don't demand as much the higher-end crowd.  So a GT220 isn't much faster than a 9400GT or 8500GT or 7600GT.  The AMD/ATI counterpart to 7600GT was Radeon X1600.  But only you can see for certain if your X1950XT is better or worse than GT220 by testing it out -- or find reviews that happen to make daisy-chained tests of cards mentioned.  You're not going to find a review where someone compares a new low-end to a 4yr old high-end. 
 
Most who bought higher-end then will buy higher end now, for the price you paid for a Radeon X1950XT, that's about a Radeon HD5850/5830 now (or like the upcoming GeForce GTX460).