xrx78*.ppd

    http://www.support.xerox.com/support/workcentre-7800-series/downloads/enus.html?operatingSystem=winxp&associatedProduct=WorkCentre-78xx-built-in+controller
   
    Download: Generic PPD
    
    Extract PPDs from EXE file.
          
    http://www.support.xerox.com/support/workcentre-7800-series/downloads/enus.html?associatedProduct=WorkCentre-78xx-built-in+controller&operatingSystem=unix&fileLanguage=en
    has blobs only, no Generic PPD is present at that location.