The purpose of this extension is exceedingly simple.
After you install this extension, it changes the behavior of the Category module. If you place the Category module in left or right column, it appears unchanged; however, if you place the Category module in content_bottom or content_top position, then it shows thumbnail images for the categories. Additionally, in the content_bottom and content_top positions, the module does not show subcategories.
Shop owners will find this module particularly helpful if they want to show all main categories on the shop home.
Please read documentation.
Support is at http://forum.opencart.com/viewtopic.php?f=120&t=81585
Because this is a vQmod, no core files are touched, and the changes should carry over to the next version.
I hope you enjoy this extension. If you'd like to donate, please PayPal at firstname.lastname@example.org