WSUS 3.0 HELP!!!!

I am fairly new to the WSUS 3.0 setup and needed some general information. I am a newbie to the WSUS scene, so, bare with me please. I installed the WSUS 3.0 server on a server 2003 SBS edition. I need to know how to get the group policy linked to the WSUS server so that I can add a PC to the WSUS server. Any ideas??