if you want to create a table, and doesn't have for example, phpMyAdmin, then you just do like this:
<?php
$con = mysql_connect("localhost","YourUser","YourPassword");
if(!$con)
die(mysql_error());
$sel = mysql_select_db("YourDatabase");
if(!$sel)
die(mysql_error());
$create = mysql_query("CREATE TABLE yourname(
id int not null auto_increment,
primary key(id),
yourfield VARCHAR(100),
anotherfield CHAR(32))");
if(!$create)
die(mysql_error());
echo "Table has been created!";
mysql_close();
?>