Don't want Default Browser dialog box

Hi All,

I have an application bundled with Mozilla 1.1. Whenever the client
downloads and starts the program, the Dialog box to "Make Mozilla as
the Default Browser" pops up. I don't want users to be troubled by
this dialog box. Is there any way I can change the preferences of the
Mozilla, in such a way that it gets effected even after the user
downloads and runs my application.My application runs on windows-95,
2000, XP, ME.

Any pointers would be really helpful. I have been trying hard to do
this.

Thanks
Ahmed