So i recently moved and the ethernet jacks in the wall haven't been set up. Im running wireless through the only cable jack working in the house which is in the kitchen. So rather than running a long ethernet cable to my room, i was trying to get the wireless signal sent from my router to my macbook, and then sharing internet through Ethernet into my PC running windows xp. so from: router -> macbook -> PC ive alrdy turned on internet sharing, but i dont know what to do next. it says connection failed when i open up Firefox on my pc thanks in advanced.