Consumer-grade wireless routers -- your standard Linksyses or Belkins -- do their job well enough much of the time. But there are some juicy features offered by high-end commercial routers that just don't come with the home package. We're talking features like quality of service (QoS) management, adjustable transmission power, and support for IPv6. If you need (or just geekily crave) these features, you can shell out cash for a pro-grade router, or you can get them for free by installing new firmware on a cheap home router.....(free).....