IRQ conflict (Modem and Mouse) !!!

My mouse and my modem are in IRQ conflict. The mouse is on COM1 and the modem is on COM3, when I start the modem my mouse doesn't work.
How can I fix that ?? Can I change one of the IRQ's ??

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You basically have two choices.  YOu can change to a bus mouse or go into your bios and disable your second serial port. Then configure your modem for com2. You never want the modem and mouse on comports that use the same IRQ, such as com1 and com3 or com2 and com4.

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