I bought a linksys WRT54G wireless router to set up a home-network to share one comcast cable internet service among three computers. For the first hour it always works fine but afterwards only one computer can use the internet, the other two having been booted out. Interesting thing is that the other two can ping just fine to outside the LAN but it seems that they can't establish any kind of tcp/ip connections to outside the LAN. However everything works fine inside the LAN. I can play LAN games with all three computers, for example. I have no idea why this is so. Please help me. Thank you.