To reserve an IRQ you simply go into the bios.
Use your right cursor to move to the Advanced screen.
Then move down to Resource configuration.When you enter this it should list all of the IRQ's on your sys.
Simply highlight IRQ 5, hit the enter key and select reserve.
F10 saves changes and exits.
(I am assuming this is a dell machine, if not then it should be pretty similar)

If you do not have a resource configuration option then you more than likely cannot reserve your IRQ's here.

Before you reserve your IRQ you should remove the sound card and the network card from add/remove and device manager so they can redetect properly.

Best of luck.

[This message has been edited by harney (edited 06-21-2000).]