Overlay for java application

Hi,

I am writing a .NET application.

I have an existing Java boardgame application (I do not have the source though). The board is represented in 2D.

I would like to make a program that I run on top of it and shows the same board but in 3D.

I would just like to know if it is possible to get the pixel-values of a java-graphical user interface. (even when it is not visible because there is another active window on top of it). So that I will be able to write an application that can look where the pieces are on the board.

Does anybody know how I can do this?

Thank you in advance.

take a look http://www.nevaobject.com/products.htm

I don't see how these products can help.
Like I said, I do not have the source of the java application.

But which of these products are you refering to?

You have it as Java .class files, or java archive right?
I guess the JavaDllBuilder can help you create a Dll file for those classes and handling dlls in C# isn't that hard to do