>Hi Erik
>
>Thanks for your reply
>
>They will both have the same registry values as the browser is loaded from a NAL (Novel application launcher) job, so I do not thik that can be the problem.
>
>I would have thought the second problem would not need to know the file associations,
>ast I am passing it a web address and not a pointer to a web file ?
>

ShellExecute is using the protocol as the "extension", IOW, you need to be looking under HKCR at http, not htm.