have you ever built a computer before, like a desktop rig? if not, then you won't be able to take out the gpu without pulling your hair out and possibly ruining your 9880.
if you really want to be bold, then go ahead and attempt the operation. go to your local computer store and buy some arctic silver compount (doesn't have to be AS5). then call sager tech support and have one of their techs guide you over the phone on the procedure. this would be your best bet.
or, suck it up and pay the $50 to ship the system to sager so they can do it. they will ship you the system back via 2nd day air at no charge.
either way your system should not be shutting down. my current 9860 has never shut down no matter what game i played on it. just make sure it is not 95F degrees in the room when you attempt to stress the system playing games. if your system shuts down while only playing BF2 and not any other high stressfull game, like HL2 or DOOM3, then besides the operation, check to make sure you have installed the 77.30 drivers provided in the BF2 demo.
