Write to and Read from the HKEY_CLASSES_ROOT in the Registry

[wavering]

I am using Visual Studio 2013 and have almost completed conversion of my project from vb6 to vb.net

I need the application to be able to read and write to the HKEY_CLASSES_ROOT in the Registry (for file extension associations)

When I try to use:

' This works OK
My.Computer.Registry.CurrentUser.CreateSubKey("MyTestKey")

' This does NOT work
My.Computer.Registry.ClassesRoot.CreateSubKey("MyTestKey")

I get:

"An unhandled exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll

Additional information: Access to the registry key 'HKEY_CLASSES_ROOT\MyTestKey' is denied"

The folder "HKEY_CLASSES_ROOT\MyTestKey" is NOT actually created

Is it possible to modify permissions so that I can develop this program without running as Administrator and then enable my users to run it as non-Administrators?

Obviously, I want users to be able to just run it (in other words I don't want them having to personally access the Registry)

But either way, an idiot's guide to permission granting would be very useful ... many thanks