Attached Link: http://ofb.net/~niniane/clouds-jgt.pdf

...And here's how they they look in VUE. This is only a VERY SIMPLE 4 Bill Board formation. FS2004 uses much more complex formations in box-like structures. But I present this to basically show that this IS a method for using Cumulus-Nimbus (and other) type clouds in Vue... and it should be DEVELOPED FURTHER...

NOTE:- This is only for EXPERIMENTATION- as these ARE the property of Microsoft- and they should NOT be sold or even distributed for free! You could get into serious legal trouble- so don't do it. BUT- these same textures could be fairly easily MADE in PHOTOSHOP once anyone examines
how they are made.

I would also like to thank the very cute Lead Software Engineer Niniane Wang who worked at Microsoft from 1998 to 2003-- and who's team developed these wonderful cloud effects. (See atached PDF)