Problems With Wireless

I recently bought a new computer, an Acer, and i already had a dell one.
We are on aol, and we bought a Netgear wireless adsl router.
The wireless modem works down stairs, and the adaptor, when installed upstairs to my new computer, says that both computers are conneted! AOL works fine on the main computer, but on the one upstairs, run by the adaptor, it says it cannot connect to aol? Anyone know what the problem is, and how to solve it?
Either reply to this, or my email address, Lil2cute2b4got@aol.com
Thankyou x

Is your AOL strictly a dailup connection or do you have AOL in conjunction with a broadband connection? If it is strictly a dialup connection, I don't know of an Internet Connection Sharing program will work with a wireless router.

its broadband?

Is it connected like this ? http://www.grey-zone.ca/wireless.gif

That's exactly what it should be.

I am not sure what cable set up you have used to organize the wireless ADSL router, but this story may help.
My friend and I had a problem with his upstairs AOL broadband connection, after his ADSL modem had to be replaced.
All sorts of strange symptoms using different cables and different computers and different modems. The local PC World talked him into buying a wireless router/modem and that also gave different symptoms with different computers etc.
He has two telephone lines in his house and even these gave different symptoms. I was thinking it was a tel line fault (or two), but in the end, after hours on the helpline to AOL, and after the attention of two or three experts, it turned out to be the fact that he was using a telephone extension to the upstairs computer and then a short network cable, when a long network extension cable is better.
Good Luck, and don't give up!