I am aware that there is a dll file called "csgl.dll" that has to be installed in order to run the C# demos in the tutorials section but I am slightly confused as to where it is supposed to go. I added it to the toolbox but I am still getting errors. I did a search in the forum before I posted this message but what I found didn't help me at all. Apologies if the answer to this is somewhere else,I couldn't find it.

Is the .Net framework installed on your computer?

Yes it is. A friend gave me two dll files ("csgl.native.dll" and "csgl.dll") and a batch file that installs them ("install.bat").
I ran the batch file but I still get the same 3 errors when I build:

1."The type or namespace name 'CsGL' could not be found (are you missing a using directive or an assembly reference?)"
2."The type or namespace name 'OpenGLControl' could not be found (are you missing a using directive or an assembly reference?)"
3."The referenced component 'csgl' could not be found."

Both "csgl.native.dll" and "csgl.dll" are in the correct directory ("C:\winnt\system32").