185393 one registration for 3 Scripts

HI My project concisest of { Clipshare script (Youtube clone) + RadLance + RadClassifieds + PHPBB3 Forums + Kayako Support Suite } I want to gather links to those script under one interface which will be my home page and this is not a big deal for any programmer ( even me ) the important part that I want to have one registration form for all the scripts (Clipshare + Radlance + RadClassifide) the user will rigester once and his registration info will be sent to all the scripts at the same time he ( the user ) can login to any script with the same user name and password.