When running a control in IE or an .exe via href, you have two options, you can either code your application to only perform operations that are allowed with the default permission set (in this case local intranet) or modify the client machine to elevate the permissions available to your app.
There are some great articles on this site about security, permissions and ways to elevate them on the client.
Chris Sells wrote an excellent Wonders of Windows Forms cloumn on this. It can be found <a href="http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnforms/html/winforms11122002.asp">here</a>.
You can also check out the rest of the Security articles <a href="http://windowsforms.net/Default.aspx?tabindex=3&tabid=40#Security">here</a>.
Good luck - mike |