Starting XFce4 without kdm or gdm

[Paul M. Bucalo]

Up until this point I have either used kdm or gdm to login to XFce-4,
depending on whether I'm using Mandrake or Red Hat. Is there any other
Desktop Manager I could use that's lighter, but would still allow for a
user/password login? 

Appreciate any advise and experiences. I really want to trim the memory
usage down to the bare minimum in getting XFce-4 up and running.

Thanks,

Paul