[Marco van Herwaarden]

First of all you would be much better of if you just added a new column to the user table, instead of creating your own new table. That would be 1 query less on every page load.

I am sorry to say, but if you can not figure out how you can work with phpMyAdmin, you must really ask yourself if you should try coding.

In phpMyAdmin, just select the database you want to work on, then when you have the list of all tables, there must be a link somewhere to create a new table, or a page where you can enter a SQL statement to manually create a table.