playing a game

hi i have recently upgraded my video card to a geforce 8600gt and after i installed it i purchased medal of honour airborne
when i try to install the game windows installer shuts down
i have been into the data execution prevention slot and selected the program i want to run but when i try to install again it shuts it down
i know vista is protecting me but this is madness
can anyone give me some advice on the subject before i purchase anymore expensve games that wont install

alan :mad:

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