I think that the Module Term::Readkey comes already installed with perl...
If this message comes, either the modulename is not spelled correctly, the connection into internet is not configured correctly this package is not indended for your operating system.
You can try to download the Module in zip-Form from www.activestate.com, unpack them to a temp directory, change into that directory, look for a file with the extension *.ppd and enter
ppm install xxx.ppd
where xxx.ppd is the complete name of the ppd-File. Then there might come a better error-Message.

If this module is not intended for your OS, then you could try to get the module from CPAN and pray that you are able to install it.

Best regards,
perl -le "s==*F=e=>y~\*martinF~stronat~=>s~[^\w]~~g=>chop,print"