in reply to dmake on win64-bit

I'm assuming from your mention of "ppm" that you're using a version of ActivePerl. Doing a quick Google search, I found this post from Jan Dubois on an ActiveState user forum: http://code.activestate.com/lists/perl-win32-users/32786/

My guess is that you might need to download the Windows 2003 R2 Platform SDK to get the compiler and make from that environment.

If you're not restricted to only using ActivePerl, have you considered trying Strawberry Perl? It looks like their 64-bit distribution of 5.12.3.0 has some compilers (gcc, mingw) as well as a dmake.