Where can I find a side zombie stormtroopers? Or at least tell or show me how to do?
And how is it possible that block selection side? As in the campaign.
How to make a zombie? Please Help me...

start by reading this tutorial on adding custom sides: http://www.gametoast.com/forums/viewtop ... 27&t=12729

Look in the campaign Lua files to see how they disable selecting one side.

Search in the released assets section for a zombie skin. I'm sure there are a few.

You should look in the everything you need thread before posting, It has answers to most basic questions.

I know how to add the custom side.
I do not know how can I get a new unit. How to install cloths? How to make a skeleton wampas?

I'm assuming you want to add cloth to a unit so here are two topics on that from the FAQ
How to hex edit cloth (or any MODL chunk) from one unit to another [Simplified]
How to hex edit cloth (or any MODL chunk) from one unit to another

For a skeleton wampa you'd need to make a new model for that.