uap causing trouble autoconnect functionality built int

I am updating a custom RAS dialer to work on Windows Vista. It already works fine on Windows XP, even as a limited user. The RAS phonebook is set to execute a custom .dll, when the user opens up Internet Explorer. The CustomRasDialDll is set to the custom .dll. This .dll launches the custom RAS dialer to perform the necessary connection to the Internet. When a normal user attempts this, CreateProcess fails, returning "Access is Denied". Launching the Dialer does work when logged in as an Administrator, or if I disable the User Account Protection feature.
What changes need to be made to the custom .dll to allow it to launch an executable? I have read that adding a manifest can help executables, but I haven't seen anything about .dlls. The process that loads the custom .dll would be the Internet Explorer's executable, which I have no control over.

Have you tried the Standard user analyzer?
http://blogs.msdn.com/uac/archive/2006/05/25/607348.aspx
Josh http://windowsconnected.com
"ScottV" wrote in message

I am updating a custom RAS dialer to work on Windows Vista. It already works fine on Windows XP, even as a limited user. The RAS phonebook is set to execute a custom .dll, when the user opens up Internet Explorer. The CustomRasDialDll is set to the custom .dll. This .dll launches the custom RAS dialer to perform the necessary connection to the Internet. When a normal user attempts this, CreateProcess fails, returning "Access is Denied". Launching the Dialer does work when logged in as an Administrator, or if I disable the User Account Protection feature.
What changes need to be made to the custom .dll to allow it to launch an executable? I have read that adding a manifest can help executables, but I haven't seen anything about .dlls. The process that loads the custom .dll would be the Internet Explorer's executable, which I have no control over.