MySQL Table

This is for PHP/MySQL
I have this code to create a table in a database

$linkid = mysql_connect("localhost","dennis","********");
$tbltest = mysql_db_query("my_db","create table tblMyTable (t char(50), d char(50), primary key(t))");

It doesn't give an error, but it doesn't work.
the password, and U/N are correct, because i successfully created a DB using them.

I can't seem to create a table.

Thanks,

Dennis.

Come on!!!
Help me out here.....