How do you determine what device is using what resource? I am trying to set up a dual boot NT/Linux machine. The NT side is all set up and is my work machine. I have the modem set with jumpers to Com3, IRQ 5. I do a setserial without parameters, and I see the kernel has /dev/ttyS2 set to IRQ 4. Now I try to setserial to irq 5 and it says "resource busy." What do I do? If, after we figure this out, IRQ 5 becomes available, how do I cause /dev/ttyS2 to set to IRQ 5 at boot time? Father Parthenios (800) 227-1629 [EMAIL PROTECTED] www.cybercom.net/~htm