Sebastian Leupold, I've understood your module idea. But i have some question for u. 1. Why do you need two table 'anynomousVisitor' and 'UserOnline'? That's give us some problem: Total = vistor + member (online). When visistor == member then Total is fail in fact. So in my idea, we should include 'anynomousVistor' and 'useronline' is one with some field have added. 2. I have example: I'm loggin with username 'hoang'. UserOnlineTimer is set 10minute. So after 10minute have no member recall page. I refresh browser (calling page). The number total is zero (Total = 0). Next I resfresh browser. Total =1 and i'm online. Why is it not me online and total = 1 for first time refreshing. That's all. Thanks a lot.

Thanks, this helped me. I somehow had the setting at 999 and had a huge list of online users! Doh.