Here is my zip to generate a 360 x 360 degree view of a lake that I mapped to a Sky Spere via Cube Mapping
http://www.geocities.com/jjames@pacbell.net/CubeMappedSkySphere.zip
I had some trouble with Cube Mapping and Rich Helped me out. Here are the Key Points.
Quote: "
Front, Back, Top, Bottom, Left, Right
Without seeing the textures you're using I can't comment further. The textures should be a uniform size (i.e. 256x256 or 512x512) and should be applied to the object in the correct sequence as above
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In Addition I came accross this excerpt from a book on Nvidia Cg graphics that add some usefull info, be patient it is quite slow to load, but worth the wait
http://www.aw-bc.com/samplechapter/0321194969.pdf
System
PIII 650 MZ H.P. Pavillion
394 Mem GeForce 4 400MX