Configuration of mcrypt and PDFlib

[William Holroyd]

So I've got PHP to recognize mcrypt and pdflib in the phpinfo() output, but
trying to use any of the functions fail with "...undefined function
called..". There aren't any configurable files with either distro and
neither mention php.ini settings need to be made. Restarting the apache
server does not fix this and no errors are reported while starting.

The most recent stable releases Apache 2.0.49 and PHP 4.3.6 are being used
with mcrypt 2.4 (stable, but 2.6.4 is most recent) and pdflib 5.0.3p1 (most
recent stable release) libraries, running on Windows 2003 Server Enterprise
with all updates applied.

I picked up a copy of Visual Studio .NET Enterprise but am also stumped of
how to compile these functions from source which I would prefer to do at
this point.

Any help on either topic is much appreciated.

-William