Add Module to Existing Perl Installation

Well, that’s what I have been trying, but what doesn’t work, even after the recent install:
Can't locate Spreadsheet/Read.pm in @INC (you may need to install the Spreadsheet::Read module) (@INC contains: C:/Perl64/site/lib C:/Perl64/lib) at searchmyjobs.pl line 3.
(My perl statement is use Spreadsheet::Read;)