Just realised why they call it Fedora - quite clever.
Would imagine to uninstall do:
rpm -e <name of program to be uninstalled>
. (think it's -e)
- this is not the same as the name of the file (with .rpm on the end). It'll be something like 'debian-gdm' perhaps.
Bit odd using a Debian program?? Debian uses apt to put in programs.