http://blogs.msdn.com/johnrdurant/archive/2005/09/22/vsto-outlook-samples.aspxWhile answering some posts in the NG's, I found one by Jay Harlow, Outlook MVP. He mentioned how pleased he was with our add-in support in VSTO 2005. That is pure goodness. Anyway, in our exchange, he mentioned that he has two good VSTO Outlook samplesen-USCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.msdn.com/johnrdurant/archive/2005/09/22/vsto-outlook-samples.aspx#473931Mon, 26 Sep 2005 14:40:39 GMT91d46819-8472-40ad-a661-2c78acb4018c:473931Jay PondyJohn <br> <br>I attempted to use a background worker thread in an Excel VST0 2005 project and received an error message. Is Outlook somehow different?