I recently upgraded my DSL service at home, and (un)fortunately, it’s faster than my old Linksys router could handle. I really miss the Tomato firmware I had flashed on that, but have managed to come across a hidden administration page on the new Q1000 that covers a large majority of things that I thought I lost.
Check out the http://192.168.0.1/main.html (or whatever your modem’s IP is).
Most Important to me are the DHCP reservations and Dynamic DNS. There’s also a QOS page from here, but I haven’t spent any time playing with it.