Outlook automation running as unsigned ActiveX

I have an ASP.Net page that uses the Outlook COM object to build an Outlook email within some client-side scripting. When you generate the email, you get a message saying it's an unsigned ActiveX so you have to have your security settings allowing access to unsigned ActiveX to use it. I thought it was due to the Interop assembly being unsigned so I downloaded and registered all the MS Office XP Primary Interop Assemblies and included the Office & Outlook ones in my project. Now all my project's Resources have Strong Name = True but it's still an unsigned ActiveX.

I'm relatively new to ASP.Net so I have no clue what I might be missing now. Any help would be greatly appreciated.