How do I create a wireless nouns between the TV and cable to avoid running a long cable between 2 rooms?

I own a Mac, Tivo and broadband internet.

Answers: eyetv!

http://www.elgato.com/ have products to share your tv over wireless 802.11 protocols!

using your mac (and other macs, and an Apple tv)

OR, run some cable through the ceiling!

PS a wireless bridge won't abet unless you are network tcp/ip on your macs!