I'm pretty busy right now, but heres a link to site with loads of high resolution images of the Earth, and they also have cloud textures, as well as pre mad bump maps...
So check it out.... Here
I will be able to talk better later.
"Your weapons are no match for ours! People of Mars, surrender!"
"Um, this isn't Mars. This is Earth."
"Earth? Earth-with-nuclear-weapons Earth?"
[long pause] "Friend!!"