So My problem is the following. I have a wireless network set up at home with everthing dandy. One PC connected with wires directly to the router (Linksys WRT54G v1.1), while there is one PC and one laptop that connects wirelessly. I was trying to add another wireless PC to the system. I bought a wireless Linksys PCI-card (WMP54G v4). Installed it into my system everything seemed flawless, but it was not able to locate the wireless network! I had my laptop right next to it and it still couldn' t find it. Why? I tried uninstalling and reinstalling, but all that changed were that in the Networking Connection I saw Wireless Connection 2, than Wireless Condition 3 and so on. Why can't it locate the network (I tried using another antenna, but to no avail). There are no yellow exclamation marks in the Device Manager. I tried to connect the router to the system with an Enthernet cable, everything worked fine. I tried to connect with the wireless while connect via a cable and even then it would not recognize it. SSID is not hidden. I have another PCI Linksys in another system it is a g-based so probably it is WMP54G too, but the version is lower. I switched the two cards and still nothing. The previously working card did not recieve a signal either! What prevents the card from receiving the signal. I'm lost, help me. Thanks for the help!