Opening URL Addressable Forms to Create new Related Records

refer these url..

http://blogs.msdn.com/b/dmcdonald/archive/2012/05/16/opening-url-addressable-forms-to-create-new-related-records.aspx

http://gtcrm.wordpress.com/tag/ribbon/

http://msdn.microsoft.com/en-us/library/cc150850.aspx