Hey, so heres whats happening.. we have 4 computer on a network, 2 are wired, 2 are wireless. We have our internet coming from the wall>Modem> trendnet 54mbps wireless g router. The 2 wired computers are in slots 1&2, the other 2 computers have the USB wireless adapter (same company). One computer is setup and working fine, but i cant get the other one setup. The first one was setup awhile back, and where only now adding the 2nd, so i forget how the first was setup. Im thinking maybe that router can only have 1 wireless computer connected to it??? My dad doesn't seem to think so, but i cant figure out what else it could be. Hope yall can help.. Oh, and ive noticed that we have random periods where the internet will go down for a few min at a time. This only started happening when we switched to the new router so my sister could go wireless. Is it just not fast enough to run all 4 computers? or is somethign else wrong?

A wireless device can support tens if not hundreds of computers at the same time obviously sharing its bandwidth output. You probably have to run the router wizard again so that you properly configure the connection and make sure that the wireless/ethernet drivers on each computer are installed properly.

A router is not always a plug and play scenario especially when the connection is PPPoE ADSL or some other protocol.