If you put one of the web part pages in your Sharepoint site now and click the Add a Web Part button on a web part zone you should be presented with a popup containing the newly installed QlikView web parts as illustrated below:

NOTE : You must add exactly one QvDataSource control to each page as this is where you configure which QlikView application the page will be displaying content for.
After you have added and configured the QvApplication file property for the QvDataSource you should be able to add any combination of addiitonal QlikView (or other) web parts to your page.
NOTE: We have had some experiences where on adding QlikView web parts to a page that the objects have not displayed correctly - this is usually when QlikView Server has just been installed as well as SharePoint. If this is the case, please restart the machine and in most case the web parts will display correctly.