I'm trying to install the Tk module on my Windows 2000 machine with ActiveState Perl. When I type perl Makefile.pl I get (among other, normal-looking output) "'cl' is not recognized as an internal or external command, operable program, or batch file." I think 'cl' is supposed to be my C compiler, which is gcc. I notice that Makefile.pl has some lines with $Config{'cc'}. I tried replacing each $Config{cc} with 'gcc', but the problems don't go away. Am I on the right track? What is the right way to fix this?