C# GUI Control Needed

I need a C# Winform Control which extends upon the behaviours of the TreeView and DataGridView. As such, the control will allow displaying of items in a hierachical view with columns. In addition, individual items within the control should be more customizable. ## Deliverables Development of a C# winform gui user control - Items are displayed in a hierachical view with columns - Items can have their own customized representations - Items can be annotated with labels, icons and other elements which can be interactive - Multiple selection, highlighing, customized scrolling of items is possible - Preexisting behaviours of treeviews and datagridviews, such as dynamic loading of items, collapsing expanding of items should be included Interested parties can request for more specific deliverables through email. ## Platform Windows XP and Vista