Guest logins in fluxbox edtion

[leke]

Hi, I recently installed Prey (an anti theft application) which creates a guest account for the bad guys to be spied on instead of them having to install an OS. Problem is, there is no way to tell there is a guest account at login and pressing return (entering nothing) for both user and password fields fails to work. The account has been created -- I checked in the Users & Groups.
How can you make it so guests can see there is a login for them?

Thanks.