Here

a tool
http://darendash.home.comcast.net/CubeTheSphere.html

another tool, use this to increase the canvas size...don't strecth the images.lol
http://www.artweaver.de/index.php?en_version

if you have a powerful enough vedio card then you can set the cube
convertor to spit out 2048x2048. 1024x1024 works just fine.
it would be the differents of 18mb and 90 mb per scenery thou.lol

some screen shots
http://allyoucanupload.webshots.com/...30649014214065

some instructions
http://allyoucanupload.webshots.com/...36506190046150