You don´t need the edit.ascx and settings.ascx. I assume you are using the module template for Visual studio which creates the needed files for you. In that case delete the files you don´t need and in your view.ascx(Or however you named it) Just create your control like you would any usercontrol. Just create a postback for the button and get the data from the database and databind it to a grid or repeater to show the results. 

Then in your Dotnetnuke website create a new module and select your ascx file. Then place the module on a page in your site and your done. Ofcourse I am taking a shortcut here but that´s because there are excellent tutorials on how to do this in the forums here.

Stephan
http://www.mexmax-internet.com