Thanks for that!

I've managed to find a component called GL Visir, but haven't had time to check it out yet. It's free and looks like it might be able to do what I need.

Like DirectX, I know absolutely nothng about OpenGL. If you are familiar with it, can you tell me...

In very basic terms, (and ignoring objects & BSP's etc for now), is the landscape for an OpenGL game constructed using a matrix (grid) of tiles where each one is made from two poly's which you can deform by raising and lowering the corner points?

Or, do you possibly have to build the 'grid' yourself from individual poly's?

Sorry if my questions are stupid BTW...

Baz