It will work as infinit said because it has one USB connector and another LAN connector. I would recommend that you buy a small hub or switch [5 ports D-Link] switch and connect the Q-Tel ADSL router on one port with switch and yo will have another four free.

While you have a wireless 3COM then it is fine, you still can use the ports on the router to directly connect to the internet through LAN or if you want to use the wireless then that would be better if you have laptops ...

Configuring the 3COM is very easy and won't take more than 5 minutes, but sometimes it won't work directly if it would be a replacement to Q-Tel router and you have to go around to configure both as one device ...

Do not dwell in the past, do not dream of the future, concentrate the mind on the present moment. (Gautama Buddha)