"getting error while installing Tk-804.027"

This version is from 2007, subsequent releases have many changes relevant to you. When installing a module check the open bugs/issues and, if applicable changes made since the version you plan to install. I have Tk v804.031 installed on Strawberry Perl 5.16.2, Windows 7, and don't recall doing anything other than c:\cpan Tk. Try this and be patient as it runs through the test suite.