Register File Extension Example

 <?xml version="1.0" encoding="UTF-8"?>
 <Package>
     <DisplayName>Register a file extension</DisplayName>
     <Description>Register a randomly generated file extension to open with notepad.exe</Description>
     <Version>1.0.0-1</Version>
     <ReleaseDate>2013-01-01</ReleaseDate>
     <Default>true</Default>
     <Script>installscript.qs</Script>
     <UserInterfaces>
         <UserInterface>registerfilecheckboxform.ui</UserInterface>
         <UserInterface>openfilecheckboxform.ui</UserInterface>
     </UserInterfaces>
 </Package>