@thefruitbat
its "Bender's Ultimate Environment", clouds number 14, cloud size: RA_Clouds.
@X-Raptor
Download the version thats suits you from the first Skippers post. Extract it somewhere on your computer. You can extract it with winrar, winzip or some similar program. When downloading it, it could change its extension to .html (mine does that, because I use Opera browser), in that case just rename that ".html" into ".rar" before extraction.
Go to the folder where your game is and find this files:
il2_core.dll, il2_coreP4.dll, msvcp71.dll, msvcr71.dll
Copy-paste them somewhere else on your computer. That's just in any case, so that you can restore them, because they will be overwritten with this mod.
In the mod folder find files with "dll" on the end, and copy paste them in your game folder, it will ask you do you want to overwrite it, do it. Then copy-paste files from the folder MODS (in Skipper's mod) to the folder MODS in your game. Be sure that you put files in corresponding folders. Just follow their names for that.
That would be it.