ActivePerl and -P option

Hi all,

I am new to perl, so I am new to these lists, but I hope I am posting in
the right groups.

I have installed on my Win 2k system the latest version of ActivePerl
5.8.6 (http://www.activestate.com/)

I have to write a perl script that uses some defines from an .h file. So
I decided to include in the perl script that .h file (i.e. #include
"a.h"), but in order to use those defines (i.e. #define ALFA "alfa") I
have to run the script through the preprocessor first, and the help says
this is supported: "-P run program through C preprocessor before
compilation".

I tried this in 2 ways, and failed both ways:

1) I tried at the beginning of the perl script to put:
#!/usr/bin/perl -P
but by running the script I get:
"Can't emulate -P on #! line at a.pl line 1."

2) By running the perl with -P option I always get "The system cannot
find the path specified.". Any clue why do I get this error? Any clue
how could I fix this?

Any help would be most appreciated,
Viv