Hey all, i've got a few questions i'd like some help with

Firstly we've just got Broad Band well where waiting for it to be connected within 10days, the thing is as we've networked the computers we bought a ADSL modem router instead of using 2 seperate, the broblem is how do i know when BB is ready to use? And secondly will i have to set up an ISP or sometyhing manually? I know these are stupid questions but for some reason i just cant seem to get my head round this. Any help would be greatly appreciated
Thanks in advance.