As I see this situation, Makefile.PL warned you that it misses those libraries "png" and "z", so you really need to "show" them to Makefile.PL somehow. I suggest you editing Config.pm to add extra libraries path.

Those unresolved externals that MSVC++ explains are symbols from those libraries.

BTW what "perl -V" outputs in your case?

Courage, the Cowardly Dog.