The idea is that you go to the link posted by jdtoronto ( http://theoryx5.uwinnipeg.ca/ppms/x86/Math-Pari.tar.gz ) and download the Math-Pari zip. Then extract that zip file to some folder, 'cd' to that folder and do what the Readme tells you to do. However ... don't know if it was just me ... or if the website was down when I tried .. or what ... but I couldn't download the zip file. As an alternative, download http://theoryx5.uwinnipeg.ca/ppms/x86/Math-Pari.tar.gz and place it in some folder and 'cd' to that folder. In the same folder, place a file named Math-Pari.ppd that looks like this: 
 <SOFTPKG NAME="Math-Pari" VERSION="2,010500,0,0">
    <TITLE>Math-Pari</TITLE>
    <ABSTRACT>Perl interface to PARI</ABSTRACT>
    <AUTHOR>Ilya Zakharevich &lt;cpan@ilyaz.org&gt;</AUTHOR>
    <IMPLEMENTATION>
        <OS NAME="MSWin32" />
        <ARCHITECTURE NAME="MSWin32-x86-multi-thread-5.8" />
        <CODEBASE HREF="Math-Pari.tar.gz" />
    </IMPLEMENTATION>
</SOFTPKG>

[download]
Then run:
ppm install Math-Pari.ppd

Cheers,
Rob

In reply to Re^3: installing Math::pari by syphilis
in thread installing Math::pari by veeruch

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