New 24" Aluminum iMac
New Black Macbook
8 GB iPhone

I have the Airport Express "54G" version from last year and it is connected to a Time Warner cable modem. The cable modem also serves as the connection for my Time Warner digital phone.

I often lose connection to my wireless network and I'll describe it to you. I'll be typing away on my iMac and it will suddenly drop the connection. I'll go to the airport control on the menu bar and hover over the icon till the "known" networks appear. My network is WEP encrypted. I click on my network and it says "cannot connect" or "timed out". I eventually have to unplug the AP express, wait a few seconds, and plug it back in to get it to work.

Anyone know what the issue could be?