Your right I missed the making texture.
But if I remember right it did have lots of images in the program or ad-ons that you could use as textures.
I also thing the USA government has all types of maps too.

Then maybe terragen.
Also do a search here in the free stuff on terragen. I see a TeXpert from http://people.freenet.de/Myth_de/TeXpert.html

http://www.terrasource.net/
There is lots of programs and links at the site.