I have a computer in my workshop, about 50 feet in a straight line from the home desktop router. In a straight line the signal would have to pass through a house wall, a mudroom wall and a garage wall, all insulated but none with foil backed insulation. The signal strength is always "very low" and often drops out completely. How can I improve the signal so I can listen to on line content while I work?

Router:
Cisco-Linksys E2000 wireless N router

Home Computer:
AMD 3+ GHz dual core prosessor, 6 GB RAM, Win 7.

Workshop Computer:
3 GHz P4 processor, 2 GB ram, Win XP, Netgear wireless G card

I can hardwire but distance around walls would be about 100+ feet, some of it outside. 

              The NOSPIN Group is now offering Free PC Tech
                         support at our website:
                          http://freepctech.com