Find a Linux compatible driver for a Linksys Wireless-G PCI Adapter

Where can I find a Linux compatible driver for a Linksys Wireless-G PCI Adapter?

It depends on the Linux Distro you are using, but it may work out-of-the-box, no third party drivers needed. Try popping it in and see if it works. If that's the case, you're golden.

If not, then you can install NDISWrapper for your Linux distribution. It's fairly common so you should be able to find it for your distro. Once you install NDISWrapper, you can use the Windows driver that came with your Linksys card to make it work.