Guess I should have read the question a bit closer. I had never tried to run gimp from the command line under windoze. Just tried it on my laptop running WinME using a dos window. A straight program call at the command line has to be enclosed in "" to launch it and works fine on my machine. I suspect that you are going to have to pass along the path to the lib but I don't know how you'd go about it. Just looked in my old copys of GIMP The Official Handbook and Guerrilla Guide to Great Graphics with The GIMP but didn't find anything on windoze command line use there either.

I'd suggest taking the question to the Win-GIMP mailing list at: http://groups.yahoo.com/group/gimpwin-users/. It seems to be a fairly active list.

HTH
Daeve