You could checkout the Adsl guide. I presume its ADSL being as its BT BB you refer to. I note that they have some diagrams on this site <click here>. Here have NTL cable BB and use a Linksys Cable/DSL BB router to give separate internet connection to either of my two PC's. Possibly you will need a combied ADSL/modem router for your connections. Sorry I cannot be more specific. Wait until someone with an ADSL setup replies.