Capturing Data and screen from a machine

Question

Hi,
I am working on a project using VB.net (I am quite new for VB.net worked mostly on VB6) and my object is to make a application by which I can start and stop a Machine. Its a Product Testing machine and operator is testing the product, and a graphics is running on that machine, I've to capture that running graphical object from machine and show it in my application using vb.net.
Please help me....Thanks in advance.
Regds.
RK