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