Thanks for the info about HKEY_CURRENT_USER. That fixes the administrative requirements, unfortunately it doesn't seem to work.
When I placed GS_DLL and GS_LIB in the same relative location in HKCU as HKLM I still get the "Magick: Postscript delegate failed" message.
When I placed GS_DLL and GS_LIB in the same relative location in HKCU as HKLM I still get the "Magick: Postscript delegate failed" message.