Yes, I am still working on this. I have written a program that works quite well for me, but runs outside of Outlook. However, it wants your user id, etc. and doing Outlook stuff outside of Outlook isn't that bright.
I've decided it has to be an Outlook Addin but I've run into lots of stumbling blocks. I've been reading how to do what I want to do, but not only is the learning curve steep, but the tools don't work. I've downloaded VSTO for Visual 2005, and I get part of what i want. Then in my reading I'm told I need a COM shim, and I have to download that tool and it doesn't install correctly. Then I get to a part where I want to add onto my form, and the form region templates don't work.
It finally dawned on me that Visual Studio 2008 was being referenced a lot and since I have the Academic MSDN, I decided to go ahead and install it on my programming machine and give it a try. So far, it's working better.
Though I do wish the installers would work!