we'll be programming in the Perl programming language because it's very easy to use and free. Also, you can easily integrate it with the internet, etc.
So, you'll need a 'Perl Interpreter' to understand the code you type. Get ActivePerl (a Perl interpreter) here:http://www.activestate.com/Products/ActivePerl/
click download, enter fake name, etc
If using windows download the MSI, if it doesn't work download the AS package instead.
once downloaded, install it (just double click it, then use all the default options in the install).