Hi, I have an issue! I have a wireless network at my house! My signal on the first floor (where the router is) is excellent! Second floor is a total different story! Very low signal! See it is all of the houses in our development are like this! I have a cell phone, it also has a very poor service! Most of the time none! I have a friend, which lives four doors down from me, same exact thing! Same house! I live in a town/row house! I ordered "2.4Ghz Omni Directional High Gain Wireless Antenna", as I found out it is not compatible with my router! I have a Linksys WRT54G V.2 router! Can somebody suggest me something, to do or to buy???