I am planning of purchasing the plugin http://www.oxwall.org/store/item/361

However, I need to add a feature for this plugin. The feature that I would like to add is when a user wants to upload a file he can do the same by selecting the appropriate category and sub category.

I also want to add a search form where users can search for the files uploaded with respect to category and sub category.

As I am beginner in php, can any one please help me with the code to add the the drop down box for category, sub category and search form.

Thanking you in advance,

Regards,

Suresh