Help with shortcuts and custom web application

[scrammit]

I've created an app using the webbrowser control in .net. The app
works fine.

Here is what I an having trouble with.

I set my app as the default web browser, but internet shortcuts don't
work.

for example, if a desktop shortcut to http://google.com is executed,
my app loads but does not goto google.
This is also true if from a command prompt type http://google.com.

within seconds after my app loads, a system message appears:
"Windows cannot find 'http://google.com', Make sure you typed the name
correctly, and then try again. To search for a file, click the Start
button, and then click Search." This message is outside of my app
domain.

I do not know how to capture this and do not believe it is a
commandline arg, as I am capturing commandline args and from a command
prompt: "[path]\my app.exe http://google.com" works fine.

Any suggestion on how to get internet shortcuts working with my app
would be greatly appreciated.

Thanks in advance.

[scrammit]

Sorry - The subject should state custom web browser, not web app
....too many hours without sleep...