OpenWrt allows you to install a very powerful, highly customizable variant of Linux on your router.

1. If you haven't bought your hardware already, consult the Buyers' Guide.
2. Verify that your router is compatible with OpenWrt using the Table of Hardware
3. Choose a version of the OpenWrt firmware and download.
4. Install the OpenWrt firmware on your router.
5. Login to your newly flashed router for the first time.
6. Set up a basic configuration.