Battlefield 1942

i have a problem a big problem whenever i play a battle on battlefield 1942 the game is like full of bugs there are parts of the level that you can see tru the game and after a tiime the hole level is mixed up

i have a pentium 4 , 3.06 ghz
512 ddr ram
120 gb
Geforce 4 5600 fx 64 mb

i f you want to see a picture send me a mail the_planetrider@ hotmail.com

thanks to everybody

hey have you tryed updated ur drivers on ur Geforce or have u try use the setup or options ingame ?