On the main page at Software Informer, there is a link located in the footer area. The link is called General Information and it's located under the For Developers title. Click that link and you'll find all the necessary details related to your inquiry.
If you can't find it, there is a direct link to the page: http://software.informer.com/partners.php
Click the link above and read all the information on the page. There is also a contact form if you need it on the same page.