2D graphics on Asp.net 2.0

I am working on a asp.net 2.0 web application where I want to allow users to draw 2D graphics ( Line etc. to draw electric circuit diagram ) and need to get the events generated by users action ( mouse clicks etc.) back to server. Back end code to solve the circuit is in c#. What particular Microsoft technology / software do I need to learn to accomplish that. Any help in getting started on this would be greatly appreciated.

[791 byte] By [Singh] at [2007-12-16]