Dumb FOP question

I know this is a dumb question, but I’m a bit of a noob and I’m stuck. Got a box running CentOS 5.5 and the latest version of FreePBX. I changed the IP address of the box, and everything is working great with the exception of the FOP. When I click on the Panel link at the top of the FreePBX interface I get a Page Unavailable error and the address in my address bar is pointing to the old IP. Can someone point me in the right direction as where I can edit that? Thanks!