I was looking for a driver for the Spider 256 video card and came across this. This is a driver from the OPTI web site.
This driver is written for Windows 95, but works up to Windows 98 se. I haven't tested it farther.
To use, unzip to a floppy or HD. Right click on desktop, choose settings, choose advanced, choose Adapter, choose change.
Then select Show All, click browse and point to wherever you unzipped the drivers to. It will then say that these drivers weren't written for this device, choose Yes and you should be set after rebooting.