root@localhost error

[Poison Fly]

Edit: It's root@localhost error

Well, most titles here are a bit generic, so I'll just post it.

I get this error:

Error

MySQL said:

Access denied for user: 'root@localhost' (Using password: NO)

And now I am a little confused.
I use lunarpages.com as my host. MySQL 4.0.12

Am I supposed to modify (which I did):

cfg['Servers'][$i]['controluser']
cfg['Servers'][$i]['controlpass']

Or (which I haven't):

cfg['Servers'][$i]['user']
cfg['Servers'][$i]['pass']

P.S: I assume the username and password are the same ones given to me in order to access the control panel when I registered with lunarpages. (I tried it with that.)