I found the solution to my major problem with the Dell 3100cn. The windows PPD file needs to have the following lines added before running PIN.EXE:

*% === Job Control Language ==

*JCLBegin: "<1B>%-12345X@PJL JOB<0A>"

*JCLToPSInterpreter: "@PJL ENTER LANGUAGE = Postscript <0A>"

*JCLEnd: "<1B>%-12345X@PJL EOJ <0A><1B>%-12345X"

These lines solve the problem with applications that generate RAW postscript output.

Also, I found that the standard 64Mb of memory is insufficient if High Quality is selected for the Print Mode and Photo is selected for the RGB Color Correction. The printer does support up to another 512Mb in memory. The 512Mb of memory should be more than sufficient to should solve this problem.

Based on my resolution of the problem with printing RAW postscript files, I would give this printer a B/B+ rating.