Greetings.  I just recently purchased Z3TA+ 2 from Plugin Boutique.
They offered a pack of free programs there which I unzipped and put in my default programs folder. 
 
The main folder I put in there is showing up in the VST dropdown list, but then none of the subfolders or "sound type" folders show up in the second drop down.  Likewise, none of the presets show up from within Z3TA+ 2.  I can load each .fxp individually by clicking on "program" and loading it.  Then the proper subfolder shows up in the second dropdown list.  But then when I go click to go to the next sound in the folder, it just jumps to the first Factory Content program.  What the heck am I missing?

Ah, Got it sorted!  Had to reinstall and make a separate directory for 'Cakewalk Content' instead of putting it as a subdirectory of the Z3TA+ 2 folder.

I assume you know about Patch Arena.
Lots of free presets for z3ta+2
Here's the link...
http://patcharena.com/downloads/index.php?subcat=169&ENGINEsessID=8bfc59ea7f418f20a104d0f36071f5e7
 
The Muz3uM presets are very good.
 
If you have other synths such as Rapture, or non Cakewalk stuff you'll find more free stuff on the site.