What to do when a router doesn't see one of the computers with a network card.. what can I do n

I already have 2 other computers on this system but this last computer is in the very back room and it is not being recognized. I know it's not the router, or the ip address... Do I need a special antenna? My son didn't hook up the one that comes with it, so maybe that's the problem?

What to do when a router doesn't see one of the computers with a network card.. what can I do now?norton antivirus

I am assuming you have a wireless Router. it could be distance that could be affecting your computer located in the far corner. If you have a laptop with wireless capability you might what to install a wireless software called netstumbler which i think can be found at www.netstumbler.com but you might want to google it which will take you there. What that software does it searches for any wireless signal avaiable, now if you take that laptop with that software running it will tell you whether that computer is in range to recieve wireless signal. Now if thats the issue you might want to purchase signal booster antennas for your Router there which the manufacturer of that WIreless Router that you have should sell them. Now if the issue is cabling wise than you might want to drop the signal speed on your network card which sometimes helps it out. What you do is you right click on the icon that say's Network Places and select properties. Once in that window you will see a icon that says Local Area Connection you right click on that one as well and select properties. In the next window you will see a button that says Configure you click on that go to the Advance tab in there you will see a listing you need to go down the list until you see one that might say Link Speed or Speed and Duplex, once you have selected that one on the right hand side you will see an option that is on default on AUTO, you need to change that one to 10mb full Duplex or try different changes until you have a solid connection. Those steps are for Windows 2000 and XP. They should be the same steps for Windows 98 also. Try that software on a wireless laptop and if the signal is low try booster antennas. Good Luck any more questions you have i will be glad to help you.