Problems with Installshield wizard

Hi Guys I wonder if you can help me. I'm having problems with Installing a game with Installshield wizard. Everytime I try to install the game the computer tries to install ATI Display Drivers instead of the game. I know it's not the Game cd/dvd as they install perfectly well on my laptop.

I have windows xp home editon. The graphics card is Radion 9550. I've tried uninstalling and reinstalling the ATI display drivers but it doesn't make a difference.

Have you any ideas how to cure this really annoying problem.

Let me know if you need any more info.

Thanks

Cathy