Well you can use 2 texture layers on your sky cube/sphere, and place the 2 you wish to fade in the 2 slots.. and adjust the alpha level.
That would give you your fade effect. Then simply create some planes, and texture them. It is doable, and easy with blitz.
That would give you your fade effect. Then simply create some planes, and texture them. It is doable, and easy with blitz.