Question : Problem: Losing Broadband Wirless Signal

I have recently got a 3MB fixed line DSL broadband package into my house and have it connected to a wirless Netgear modum. The PC is upstairs so I use the wireless USB adaptor that came with it. When the PC boot up it automatically connects to the network with shows excellent signal and 54mb's speed.
The problem is I lose the internet connection after a while and all i get is error messages from firefox saying no server can be found even thou it's saying its still connected with excellent signal. Can someone suggust possible reasons for losing the internet connection?

Answer : Problem: Losing Broadband Wirless Signal

When FF starts giving you that message, open IE to the same URL.
If that gives you the 'page cannot be displayed' message, use the Diagnose Connection Problem link.

Follow the prompts, allowing it to examine everything. Let it fix what it finds wrong, if anything, and let use know what's left in red in the log file that displays at the end, if it still won't connect.