As for the CLJ2500 someone is asking about they seem to have PCL5 and
PCL6 and Postscript drivers on the website, dated 23 Feb 2007:
http://h20000.www2.hp.com/bizsupport...wareIndex.jsp?
lang=en&cc=us&prodNameId=21860&prodTypeId=18972&prodSeriesId=27901&swLa
ng=8&taskId=135&swEnvOID=2093