I am a noob with this so excuse my ignorance and I appreciate your help very much! I am temporarily staying at my grandparents house for a few months. They have wired internet, but not wireless. I have an old Apple Airport Express base station that I used for internet just yesterday when I moved out. His only wired cat5 line is plugged directly into his laptop for internet access. 1. If I remove that line from his laptop, plug it into the Airport Epress, and plug that into the wall, will wireless become instantly avaliable or will it require some setup? 2. The bigger question, when I want to return everything to the previous setup when I leave, can I just plug the cat5 back into the laptop as before and be good to go? Or will setup be required? Thanks for any help! (He has a HP Pavilion dv6000 laptop).