Community
dear nikhil,
work through the 'my first revit plugin' and the DevTV tutorials available from the Revit Developer page, then you will reach complete illumination!
http://www.autodesk.com/developrevit
best regards
jeremy
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Jeremy Tammik
Autodesk Developer Network -- http://www.autodesk.com/joinadn
The Building Coder -- http://thebuildingcoder.typepad.com