Problem creating database in phpMyAdmin (2.11.1)

Hi,

WARNING
Please speak really slow and in non-tech language… I am one of the many uninitiated and am trying this for the first time.
WARNING

OK. I have installed phpMyAdmin – version 2.11.1, from BT’s webhosting – as per the instructions on Codex: Installing WordPress

I’m stuck at the point where I have to create a new database.

I enter ‘wordpress’ and hit ‘create’, but then get the following error message: #1044 – Access denied for user ‘marktobinc603755’@’%’ to database ‘wordpress’

Eh?

What am I doing wrong?

Any help would be so gratefully received, I can’t even begin to describe it.

Thanks,
Mark