Here is links for you nalini....      

Part 1 (Introduction)
        http://msdn.microsoft.com/library/en-us/dv_vstechart/html/datastructures_guide.asp

        Part 2 (Queue, Stack and HashTable)
        http://msdn.microsoft.com/library/en-us/dv_vstechart/html/datastructures_guide2.asp

        Part 3 (Binary Trees and BST)
        http://msdn.microsoft.com/library/en-us/dv_vstechart/html/datastructures_guide3.asp

        Part 4 (Building a better Binary Search Tree)
        http://msdn.microsoft.com/library/en-us/dv_vstechart/html/datastructures_guide4.asp

        Part 5 (From Trees to Graphs)
        http://msdn.microsoft.com/library/en-us/dv_vstechart/html/datastructures_guide5.asp

        Part 6 (Effectively Representing Sets)
        http://msdn.microsoft.com/library/en-us/dv_vstechart/html/datastructures_guide6.asp

        Link: http://weblogs.asp.net/ssadasivuni/archive/2004/05/21/136508.aspx