Do you know the exact model of your Bell Modem ?
You can use the Bell site to recognize your modem/router and then post which one is it.
From what i searched, you will need the ip address of who is accessing your network. Then input his/her ip address in the 'Client Filtering' setting on your routers settings.
If your'e confusing, take a look at the Bell Router's Manual. If you lost it, you can download it from the Bell site.
Edited by Delta16, 22 February 2009 - 02:00 PM.