If you want a much cheaper (but harder to set up) solution, consider buying a Linksys WRT54GL, putting Tomato/DD WRT on it, and use it as a wireless bridge. I got two when they were getting rid of them at T-Mobile for $20 each. Even at retail price, $60 is cheaper than most ethernet bridges, and it can bridge multiple connections (e.g., I use one in my living room to get internet to my 360 and HD DVR).