#5.8

C:\>ppm install http://crazyinsomniac.perlmonk.org/perl/ppm/5.8/Math-GMP.ppd
Installing package 'http://crazyinsomniac.perlmonk.org/perl/ppm/5.8/Math-GMP.ppd
'...
Error installing package 'http://crazyinsomniac.perlmonk.org/perl/ppm/5.8/Math-G
MP.ppd': Read a PPD for 'http://crazyinsomniac.perlmonk.org/perl/ppm/5.8/Math-GM
P.ppd', but it is not intended for this build of Perl (MSWin32-x86-multi-thread)

# OK so I don't run 5.8, and need to get the 5.6 ppd.....

C:\>ppm install http://crazyinsomniac.perlmonk.org/perl/ppm/Math-GMP.ppd
Installing package 'http://crazyinsomniac.perlmonk.org/perl/ppm/Math-GMP.ppd'...

Downloading http://crazyinsomniac.perlmonk.org/perl/ppm/Math-GMP-2.03.tar.gz ...

[snip]

C:\>