How do I connect my PS3 and Wii to the same DSL line?

I have my wireless router, which I mainly use for my laptop, with a hard-wire line to my PS3. I hate the loss of signal with the wireless router so I ran the wire under the carpet to the entertainment center. I would like to get the Wii online as well. Is there some kind of splitter that I can hook up both devices to the same line running over to my router?