Using 3 internal modems

> On XP pro i have 3 internal modems that i want to use
> with a specific fax program that allows for up to 4
> modems. The fax program can't autodetect one of the
> modems and when i do a test on the modem in devices it
> says, "The port that the modem is attached to could not
> be opened. This may be the result of a hardware
> conflict." I looked at the IRQ setting which is 11, and
> one of the modems is 5, and the other modem is 11 also. I
> disabled Com 1 in the Bios in order to free up IRQ 3 and
> 4, but that did not work even after i reinstalled the
> modem. Switching ports in device manager also did not
> work.
>