The IRQ sharing is a feature of Windows 2000. Sometimes it doesn't cause problems, but most of the time, it does.
What you want to do to keep Windows 2000 from using the same IRQ for half of the hardware is to disable ACPI. To do this, go to the Device Manager. Under the Computer category it should list an ACPI Computer. Go to properties on this, and click on Update Driver. Choose Select driver from list, and then have it show all devices of this type. From the list that it gives you, select Standard PC. Click Yes on the message that follows. It will reboot your system and re-recognize all of the hardware, assigning different IRQ's where available.
What you will also want to do is disable ACPI in the BIOS (if it has that setting). And set Plug and Play OS to NO in the BIOS. This will force the BIOS to select all of the IRQ's for the devices, and not allow Windows to assign its own.
You may also want to disable any devices that you may not use, such as COM ports. This will help free up IRQ's and ensure that you have everything working on it's own separate IRQ.
<i>I don't know anything about computers... but I did stay at a Holiday Inn last night...</i> :lol: