Click the Windows Start menu. (Please note that the start menu will not be present after the Windows 8 Upgrade, so to access it please left click on the Windows sign in the lower left corner of the screen and then select Control Panel in the menu that opens)
Select the Control Panel > Programs > Uninstall
The list of installed programs will appear sorted in alphabetical order.
Find PDF Converter Elite 4.0 (PDFConverter.com will be marked as Publisher)
Double clicking the PDF Converter Elite 4.0 entry will uninstall the application.