As ]dws] already detailed, you can install WWW::Mechanize manually by the process he described. Another process would be to:

1. Download nmake.exe from Microsoft
2. Unpack the archive
3. Copy all files from the archive into the same directory that Perl resides in
4. Open a command prompt
5. Type perl -MCPAN -e "install 'WWW::Mechanize'"
into it
6. Press Enter
7. Press Enter if CPAN wants to configure itself, accept all defaults
8. Done

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