This code was not done by me, but written entirely by Allan, by request from me.
This allows for multiple skyboxes to be used, each one, for a specific zone (EX: One room could be day, and the other, night )
Just import this file (ZI2.u) with UnrealEd into the map in which you want to use this mod, andmake 2+ skyboxes. Give each of these skyboxes a unique tag, and place this new ZoneInfo ( ZoneInfo2, as Allan called it ) into the zone in which you want a certain skybox to appear.
Go into the ZoneInfo2 properties, and under "Skyboxtag" enter the tag of the skybox you want to appear in that zone.