|What's the model number of the card? Did the driver disk come with instructions? Sometimes you'll be told to close the 'add new hardware' window and run the install from the disk.|
When the hardware setup asks for the 98 disk it may default to the wrong location. You need to make sure it looks in the right place. So when it says it can't find what it needs it'll ask where else to look. Then you browse or type in the location of the WIN98 folder on the cd.. IT WILL ONLY LOOK FOR THE FILE IN THE FOLDER YOU SPECIFY.
Or, in other cases the file will actually be on the driver disk and not the 98 cd. So if it can't find what it needs in the WIN98 folder have it search the driver disk again.
Or, it's possible files were extracted from the driver disk and deposited in a temporary folder on the hard drive. Have it look in C:\WINDOWS\TEMP.
At this point you should probably go to 'add/remove programs' and see if it shows there. If so, uninstall it, reboot and try the installation again. If it doesn't show there remove it from device manager and try the install again.
You're not really green until you're soylent green.