Vista - Game Frezeing

Hey, i didnt have a problem instaling Medal of Honor Pacific Assult on my Pc but during play the game randomly frezes, i can still shoot and move but it appears to be frozen. Can anyone suggest a fix for this? I run Vista Home Premium, perhaps this is the probelm?

System Specc.

Vista home premium 32bit
512mb nvidia video card
Intel(R) Core(TM)2 CPU T7200 @2.00GHz
2046 MB Ram
Model: Inspiron M1710

Thanks alot.

its difficult to understand your problem mate , you can move and shoot but the games frozen?? Explain in a bit more detail please

The Game appears to be running correctly in the background. but the frames i can see are frozen. but when i minimize the game (ctrl-alt-del ftw) and restore it the game works fine for a moment or so before the frames freez again, still i am able to move and shoot etc, if i press Esc to go to say the save menu, while it is frozen, and minimize and restore it the game options menu for the game has opened, so it appears that the frames are freezing but the game continues.

Hope that explanes it a bit better