MySQL (about 1 database, many tables)

Greetings. As "Frank K" wrote for some days ago, I was into the same thing, but I need help with the following: I am creating a messaging central, which is quite about the same as a web community if you like, or whatever. The thing is, I need to save all the users, mailboxes and login dates... But I only have one database, but infinite tables. Does anyone has any examples or tips? The following didn't go very well, but probably because I suck in MySQL: $query = "CREATE TABLE $tb_name ( UiD bigint(20) NOT NULL auto_increment, uName text NOT NULL, uPwd text NOT NULL)"; What I was trying to do is to create one table which is called "users", which contains : uID (unique id, incremental!) uOnline (boolean) uName and uPWD And some other stuff, but as you can see, it did not go very well... Any help is appriciated! - Richard