Thanks Waldronate... I tried that, and the stuff in Wilbur worked fine, but I followed your instructions and when I imported it into FT I just get a blank pale blue map (if I do view properties it says altitude is 0m everywhere). I'm not sure what I did wrong - the only difference is that I imported into wilbur from a PNG, not a GIF - but I could see the terrain fine in Wilbur.

I'm feeling rather ripped off by FT now - I certainly think it's massively overpriced for what it is (I'd pay at most $10 for it, but $40 is ridiculous for a program that's so outdated IMO. I guess it's my fault for not trying the demo first). I've sent off for a refund anyway because it looks more and more like FT is no use to me so I'll see what happens with that.

Wilbur on the other hand could be useful. Any idea where the help file for Wilbur is, BTW? I looked in the Wilbur directory in program files and there's just the executable there.