THe 8200DP is a PPD only driver, even in 10.5. I'd recommend going to xerox.com and grabbing the latest version of the drivers. THe PPD should reside by the way in the /Library/Printers/PPDs/Contents/Resources directory. You may want to check and see if the PPD is present for you now, if so I'd try just re-adding the printer, no need to redownload.