As a developer at Microsoft, I have been programming with VSTO for quite some time. With Orcas coming in and with the new releases of Exchange supporting web services, development has changed considerably. When I got stuck earlier, I had to hunt a lot for information. Well, it was all there, but honestly, in bits and parts everywhere. In a series of posts across several blogs, I had earlier tried to connect these islands. I will make an effort to sum up everything here with appropriate pointers to additional information. Hope this helps and do reach me if it doesnt. Happy working. Please leave your feedback on how I can improve this blog by letting me know the things you would like me to append in here.