i dont have an answer to your question, but i just want to give you a heads up that dsl might not be the best connection to play online with your ps3 and wii.
how fast is your connection supposed to be? this might have been just for me, but i remember when i had verizon dsl (which was supposed to be 768 kbit/s) and i hooked my 360 up, the connection was not good. when me and my bro tried to play games like gh3, l4d, and gta 4 online, half the time, it would fail to connect.
the only solution that kinda worked for me most of the time was to directly connect my 360 to the modem supplied by verizon by itself. having my pc and 360 connected at the same time with a router caused the connection problems for the 360, pc still worked fine though. tried diffrent routers too to try to rule that out as a problem, but no go.
it could be possibly be different for you though, since you have a different isp, and you are using a ps3/wii instead.
i have verizon fios now, so everythings good