We have India's largest and most active Microsoft User Group in bangalore named B.NET (http://bdotnet.in). Recently I have got my blog posted on the community website.
Its about AppID (what is AppID.. its topic related to DCOM, COM+). Access it here,
http://bdotnet.in/blogs/web/archive/2007/10/15/what-is-appid.aspx
Feel free to leave comment if you have any question..
Stay tuned.. 