im from germany and i cant find any help to integrate the awsome phpfreechat - who is online list into my phpbb3 Forum footer.

I would like to integrate is like this:
Who is online?
All together 5 visitors are on-line: 4 registered, 0 invisible and 1 guest (based on the active visitors of the last 2 minutes)

Please help me

Thanks so much!
Nitschi