help with emacs lisp basics

I have a function in a file that's loaded in .emacs, but when I try to call it, Emacs returns a no match. What gives?

>>7
yes, (interactive) wasn't the problem as you weren't doing M-x compile-c. commandp is complaining because the program argument to make-comint isn't a command, I believe that the command argument may have to be an emacs function