Hello all I set up a wireless router (cable) a few months ago and all has run quite well. I have a dell 4300 dimension desktop serving as the host computer. My router is a linksys WRT54G version 6. My friend who lives with us has an archaic Compaq Armada E500 laptop, which is the only client computer. I have windows xp home and she has XP professional running. She is connected wirelessly to the system with a wireless 802.11B PCMCIA adapter WF721-AEX. Like I said, all was well until yesterday. She suddenly received a message saying that her IP address could not be renewed. She had a limited to no connectivity symbol. I tried to repair the connection but it did not work. I went to the c prompt function and tried ipconfig/release and ipconfig/renew, but it told me that it could not do anything because the media was not connected. So I gave it the computer its own IP address, and then it connected to my network. Then, it could send packets but it could not receive packets. My router's IP is 192.168.1.1....the host is .10 and the client i have as .20. I tried doing everythign that the troubleshooter told me to, including changing the default gateway, but nothing worked. I went into my linksys router webpage and did ping tests. All of them worked. I used the c prompt function to run a ping test from the client laptop. All of those tests ran smoothly. So I told the computer to automatically assign an IP address, and it went back to the same problem...limited to no connectivity...I tried everything I could find regarding this problem on various webpages and nothing helps. I've tweaked every setting I know how. I've spent 8 hours now sitting in this chair trying to fix something I don't know how to fix. Oh, and by the way, i also found out that her laptop has stopped recognizing that it has a CD drive. So I can't put my linksys cd in to fix it, nor can I put the driver cd in for the wireless adapter card to fix it.