Needing help with certain mapping issues

Cannon Fodder

L1: Registered
Feb 6, 2011
19
1
Can anyone give a tutorial, in layman's terms, how to make a 3D skybox? I would greatly appreciate it, thanks.

Also, for all of the maps I have made, reflections are missing textures. For example, reflecting weapons such as the Short Stop and Eternal Reward has purple and black squares in place of the reflection, also the Sniper Rifle's scope (unzoomed) just shows purple and black squares instead of what should be seen through the scope. If anyone could teach me how to fix this, it would be great.
 

Cannon Fodder

L1: Registered
Feb 6, 2011
19
1
Thanks for the cubemap one, but I've already seen the 3D skybox tutorial, and it's a little too complicated for my small brain capacity to understand.