Texture Scale

Hi, I'm a gameSpace user, and I've been having a small issue with UV mapping.

I was following the tutorial for it at the Caligari website (http://www.caligari.com/gamespace/tutorial/uv_map1.asp), and it says to zoom out and scale for further detail. I do this and I get it to work nicely.

However, the problem I have is with the exporting of the bitmap; even though I zoom out and scale the UV map as stated in the tutorial, it still only chooses a specific area of a specific size to export.

Does anyone know what I could be doing wrong here?

Thanks.