Dumb ass question!
 

ok, im not a hack maker, i dont have a forum, all i want is a simple answer to this question:

How do i know if some one is conected to my site and how do i know when they leave my site?

im seeking for this question since long time, i need this please answer.

and i promise i wont waste any more space on stuff like this :D

You could check the server logs, or download and install something like WebLog.

thank, but what i need its kind of the script vBulleting has, where it tells you all the registered members the are logd in.

Well since you're not registered giving out the direct code Vbulletin uses would probably not be the greatest idea (for a member here). Although you can certainly learn PHP quite fast if you check out sites like php.net or maybe buy a book on php/mysql. I'm not familar enough with PHP to write out a script similar to it.