I have a customer with a wireless network in her home. The router is a Linksys wrt54g and is working fine, it is on the 1st floor of her home, but needs to get wireless connection into her bedroom upstairs and on opposite side of the house. She has a wired connection available so adding an additional router or access point is not a problem. What would be the best solution to use, another router (what about IP conflicts with a dual router?), an access point (will this actually work?) or a power line adapter?