Windows NT has no GUI for setting up a PC-CARD's IRQ. You must edit the registry and enter an IRQ mask. Edit:
Add Value name InterruptMask of type REG_DWORD and set the RADIX to Binary. Enter the 16 digit mask.
The InterruptMask is composed of a series of binary switches,
0 means the IRQ is available and 1 means the IRQ is unavailable.
Here is an example for allowing IRQs 10, 9, and 3:
When you click Ok, the mask would appear as f9f7 in the right hand pane. Exit regedt32 and reboot.