Router manufacturers publish firmware updates regularly and upgrading your router can provide a performance boost and access to new features. Another option for the tech savvy is to install third-party firmware. There are a number of free, safe alternatives that may be compatible with your router. One project, DD-WRT, offers more robust features than many of the official firmware packages.
Using these tips, you should be able to squeeze every bit of connectivity out of your own home network. Check out HowStuffWorks' other articles on home networks to learn more.