I'm not exactly sure what it is that you are up to, but if you are trying to read the text box off of some submitted HTML form then you don't need another module. But then, you never need another module for anything but they do make life easier. I'm a big fan on the ubiquitous CGI.pm module, especially if I'm going to be returning some HTML.
“The power of the Web is in its universality. Access by everyone regardless of disability is an essential aspect.”
—Tim Berners-Lee, W3C Director and inventor of the World Wide Web