pvantine,
Thank you for your question regarding changing resource settings in Windows 98 for your PCI-GPIB. Some of these settings can be change in the device manager. Below is a great resource for troubleshooting GPIB installation issues. Are you having a resource conflict in the device manager after the board is installed? You may want to try a different PCI slot before changing resource settings if this is the case.
http://www.ni.com/support/gpib/comprob/95/conflict.htm
Shea C
Applications Engineering
NI