Irq

I got a geforce 2 a a little while ago, and since then every now and then my comp freezes up or directx won't work properly. I've been on the boards a couple times and I'd like to thank those who tried to help me out. I finally figured out what the problem is though. The new card is sharing the IRQ with old graphics card. I couldn't remove it cause its integrated. How do I go about changing the old cards IRQ. Nothing else is sharing it other that the PCI steerer thing, but that is supposed to be there. So please tell me the best way to fix this. Thanks.