I set up a z605 a few days ago. Get the driver from the above link.
Don't worry that it is listed for Redhat 9. I tried it on my Mandrake 10.1 box and it works. Just remember to save it in a path WITHOUT spaces, eg /home/username/ or /tmp.
The instructions can be found here:
http://www.linuxprinting.org/piperma...q3/002631.html
A few notes on the instructions:
To untar a file, type tar xzf file.tar.gz in a console or use ark.
Use the KDE control centre or the localhost link instead of lpadmin. I used KDE to setup the driver. You will need to enter "administrator mode" with the root password for this.