I use the Sky router as modem only, offloading the routing functions to my Buffalo WZR-HP-G300NH. Much better!
This thread helped me...
http://www.cm9.net/skypass/
Will recover your user/pass for the DSL settings in your new router.
Despite INSISTING you use their hardware if there are any issues they seem to do everything they possibly can to not replace your router, will ask for you to pay and then
refuse to supply the details should you decline their overpriced tat.