CUPS:Lexmark Z735 PPD (desparately needed)

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http://ubuntuforums.org – Hello all, I am trying to install the printer mentioned above. I was successful in installing CUPS (v 1.5.3). The printer is working as a Mac OS X printer, so the hardware is definitely ok. I just do not find the printer in the CUPS list of drivers. Google did not help for any compatible driver. Which driver should I use? Anybody out there successful? Thanks for any hints, Holger (Hardware)