Microsoft Presence Sample for Smart Client Applications
One control presents an interactive presence icon next to a control on a form that contains a name. The second control is derived from a ListView control to display the presence status icon next to names in a list. Both controls provide tooltips, a context menu, and events for contact status changes.
To download samples of the presence controls, go to http://www.microsoft.com/downloads/details.aspx?FamilyID=C812FD72-1E3A-4321-8503-C904921C291D&displaylang=en