Installation problem!

[Rub3n]

After i've installed RoundCube everything looks fine, but when i try to login it doesn't work:
it says Login Failed

I can only think of one thing that i might not be doing correctly:

Code Select Expand

// Path to a virtuser table file to resolve user names and e-mail addresses
$rcmail_config['virtuser_file'] = '';
What do i fill out here?

http://e-mail.webstylerz.nl

[SKaero]

Are there any errors in your error log?