USA map drill-down in ASP.NET

I'm looking for some component (preferably freeware) what will provide me the ability to take an image of the USA and have a user click a state. The image of the state will then display, giving the ability to click either a region, or a county, and drill down further. A user would then be able to select one or more counties. I'm also trying 开发者_如何学Goto stay away from any google mapping features.

I don't mind having to create this feature from scratch, but I'm having trouble finding tutorials or similar articles on such a technique to get me started on the right path.

Any suggestions would be helpful! :-)

I have see maps on 2 components

Dundas http://www.dundas.com/Components/Products/Map/NET/

And FusionCharts. http://www.fusioncharts.com/maps/Demos.asp

Here is a Drill Down demo http://www.fusioncharts.com/maps/Demos/AJAX/Index.html

I do not know if its what you looking, but its a start.