Printing on KONICA MINOLTA bizhub C250 was easy in gentoo
add this line to /etc/portage/package.use
net-print/cups jpeg ldap php png ppds tiff
Then Emerge cups
emerge cups
Start the cups server on boot
rc-update add cupsd default
After restarting you now have the cups web based admin running
Open a browser and hit
http://127.0.0.1:631
Click add printer and browse for a ppd file
I found one on the driver cd from Konica in
Driver/bizhubC250/EN/Win2000_XP
I clicked print test page and it worked