skin copyright tenabrae 1999. These skins are freely distributable for non-commercial use only as long as credit is given to me. permission is granted to change the skin bitmap.

Clientside put the models in your base directory, any mod that calls for them will find them there, you will not need to download the models for each mod wishing to use them.
Unzip to the following directory:
\Dynamix\Tribes\base

Or you can create and unzip to a new directory as follows, but other mods may not find them there:
\Dynamix\Tribes\War40k