As I'm still not at home in C++ this took much longer than it should. I had no idea where it wanted the PERL environmental variable defining. (I defined it for the system) but it turned out it wanted it defining in the makefile.
Which ended up looking like this
PERL = c:\Perl\bin\Perl.exe
# Where to look for the tests
TESTS = H:\CW1\Parser\Parser\*.h
# Where the CxxTest distribution is unpacked
CXXTESTDIR = H:\cxxtest
Done a bit of a whirlwind tour through OpenGL and have a massive spec for the game I'm suppose to produce my christmas. A FPS style thingy.