Every piece of hardware in our PC needs a driver to allow Windows to use it, and the proper driver so all of the features work right.
Since the demise of CNET's CatchUp service I've been using an independent source for finding drivers for old and new hardware. Check out Drivers HQ to see if you can find what you need. If you don't, go to the Help Me link and let me know!
If you cannot find your old DOS disks, or need a specific DOS boot disk, check out BootDisk.com - they've got just about one of everything!