Hi all! Thanks for the remarks!
Yes, is neccesary to scale the spheres...it's about textures. If you use a low res map on a small
sphere, you won't see any details but the map itself (sometimes i'm amazing myself how stupid can i explain things); otherwise if you use a low res map on a large sphere, you would see nothing but big pixels (it's abouth how many pixels can be put into a UV shell).So, knowing that my map it's a scale map of the earth (8kX8k is about 5km /pixel or smth like that), i scale my sphere proportional, just because things are allready complicated and wanted no more complications. I promise that i will work a bit more at this prj to find some improvements as soon as i have some time to spare. So thanks again and see you here...