I have little understanding of Wi-Fi and the correct terminology, so please bear with me here...

I have a Wi-Fi re-transmitter at the front of the house, connected to my router by Ethernet cable. It works fine, providing coverage to pretty much the whole house.

Operative words here are "pretty much". My wife likes to hang out on the deck on the back side of the house, and coverage there is pretty spotty for her iPhone and iPad.

I have no more ports available on the router, so I can't just duplicate what was done at the front of the house.

Can you recommend a simple and inexpensive way to get wireless coverage on the rear deck? It is only about 30 feet away from the router (Linksys WRT-54G) but the signal does have to go through a brick wall to get there.

What should I do?

tanstaafl.