Why can't I view this link???

[Sorceress21]

A member on Sketchucation referred me to the following link to help with a project:

viewtopic.php?f=70&t=21533&hilit=earth

The title of the thread is: Save the world - how to create clear atmosphere

The link works for him but tells me I'm not authorized to view that forum...could someone help with this please?

[nigec]

its in the old Blender plugin section which has been discontinued .. maybe its only visible to the V1x user group?