Does a combined network repeater and wireless bridge exist, and if so, which is the best brand?

I would like to use the repeater to get better wireless signal to my computer while also having the WiFi going through a bridge to be connected via ethernet cable to my Xbox 360. (No, I am not interested in buying a wireless adapter for the Xbox 360). I would also like both of these functions in one package as described in the question, if at all possible. Please, only answers from people who fully understand what I'm talking about.