It's actually pretty simple, Just download the files from here: http://www.jailbreaksource.com/download.php. Open up the zip file and upload to the matching folders in your game servers FTP. You will need to have sourcemod running. You will want Jailbreak 0.4 + Server (ZIP - 291mb) and Jailbreak 0.4.1 Server Patch (ZIP - 36mb).
<Spray> Please try locking your modem in a closet, or facing it towards the wall in the corner, so it knows its misbehaved