Change IE start page from my program - how?

During installation, my program asks the user if they want to change
their browser start page, but even if they say "Yes" I'm unable to
modify the registry. If I open HKEY_CURRENT_USER\Software\Microsoft
\Internet Explorer\Main with KEY_READ and KEY_WRITE permissions and
then try to modify the "Start Page", it returns error 5
(ERROR_ACCESS_DENIED) and since I get an obnoxious error message when
I try to modify the item directly (in regedt32), I believe my code is
doing the right thing and it's some new Windows security thing.

What does my program need to do, in order to convince Windows (both XP
and Vista) that this operation is OK? A manifest with some magic
value inside? Code-signing the app?

Yes, I realize it is very likely that the anti-virus program will then
pop up and warn the user that this is happening, that's expected and
acceptable.

Thanks in advance,
Chris

What is this whiz-bang, secretive program's name?
--
Mad Mike


"Chris Shearer Cooper" wrote:

> During installation, my program asks the user if they want to change
> their browser start page, but even if they say "Yes" I'm unable to
> modify the registry. If I open HKEY_CURRENT_USER\Software\Microsoft
> \Internet Explorer\Main with KEY_READ and KEY_WRITE permissions and
> then try to modify the "Start Page", it returns error 5
> (ERROR_ACCESS_DENIED) and since I get an obnoxious error message when
> I try to modify the item directly (in regedt32), I believe my code is
> doing the right thing and it's some new Windows security thing.
>
> What does my program need to do, in order to convince Windows (both XP
> and Vista) that this operation is OK? A manifest with some magic
> value inside? Code-signing the app?
>
> Yes, I realize it is very likely that the anti-virus program will then
> pop up and warn the user that this is happening, that's expected and
> acceptable.
>
> Thanks in advance,
> Chris
>