This is an AGP driver for Athlon motherboards. If your AGP video card is not working in Win 9x, and you have an Athlon, this is probably why.
Due to patent issues, only Intel motherboards work with AGPs in Win 95&98. This driver overcomes these issues by creating an artificial bridge to the AGP. THIS DRIVER IS NOT NECESSARY IN WINDOWS 2000. Just download and run the file, then reboot.