From http://support.microsoft.com/kb/321847/en-us and from some posts I have seen on several sites, I got the feeling that my only solution would be in developing some .Net plug-in, right?

I am using Outlook 2007, I tried the Rich Text format, the problem stands. I have not seen any parameter that would lower the security level in Outlook and display properly my custom form messages. Unless you know some way to do it?

What I am looking for is some example that would allow me to start developing such a plug-in. I am not a powerful .Net developer... yet. I got the book "Microsoft Outlook 2007 Programming" by Sue Mosher, I have browsed the web, especially http://msdn2.microsoft.com/en-us/library/bb177050.aspx, but I am still puzzle. Where do I start?

Could you point me to a few examples please?

PS: When Microsoft says "Microsoft does not support solutions that are designed in this manner", isn't it frightening?