SQL on a linux VPS

[Fehm]

Right i know quite a bit about MySQL and the likes but on my Linux VPS when i try to connect to ourbox_forum it doesnt work so i tried ourboxco_forum and that didnt work either,
Does anyone know the theorum behind the first bit?
The dbname is: forum and the username ..

Thanks for any help ^^

[Colin-Roberts]

on a vps can't it just be forum..