Depending what you installed you will find them in either one of two places.  Dynamic clothing can be found in the Props section which takings a little doing to dress. Conforming clothes is found in the figure section and they conform to the particular figure you are working with.
Tell us which character model you are using so we can proceed.  Also, did you install any clothing for this model?

DAZ does have a werewolf series.  Lycanthropos.  Link:
http://www.daz3d.com/i/3d-models/-/night-world-lycanthropos?item=7542&spmeta=rq&_m=d

Adam Thwaite also has a werewolf at his Most Digital site.

Have you checked the free section here at Rendo?

EvilInnocence has an assortment of free clothing at her site.  Check the link shares to other sites, you might hit a gold mine.

Thank you.  This little item can come in handy.

Snake oil, anyone?

Actually AB-Grafix has a full body morph pack for V3 and SP3 which sorts the dials into a more logical arrangement than the current DAZ installs.  This is the link:
http://www.ab-grafix.de/

I have this set up for my V3 and it works very well.

Now this is better.  Now where were we?  Okay.  I just quickly reread your post to get a little more insight to your problem. 
Firstly, you mention that this is a second skin.  Now I am assuming that when you look at the PSD file, you see a V4 texture plus the soap over that.  If you don't see that then the obvious has become perfectly clear to me.
Secondly, the file you received is a PSD file, a Photoshop file.  Although textures can be generated, and very effectively, from PSD files it is impractical because PSD files can be rather large.
Based on what you have posted, I believe you have a Photoshop file of soap which must be layered over your V4 skin texture in Photoshop.  This is generally creating a second skin for V4 that you must apply in the Material Room.  I'll await your response before we proceed. 

We are in the advanced section of the Materials Room and I'm going to make a big assumption: are the image nodes connected?  I'm going to switch from my laptop to my main poser computer to get a 'visual'.

It sounds like you want to create a morph target which will place a morphing dial in your properties list.  A MAT pose only textures your characters or outfits.  Now, I'm not quite sure if spawning a morph will do the same thing and some of the other members will have to answer that.  To create a morph target, make the changes to the body part(s) and the export as a wavefront OBJ.  Deselect the parts you do not to export, make sure to export as a morph target and save.  Restore your character, or generate a new character, select the body part, click load morph target in your properties and import your newly morphed OBJ.  A new dial is created.  Spin the dial to see the effects.  Just save you character in your library. 

For most renders, raytracing should be kept between 2 - 3.  Try cutting back on that and re-render.

I ran into this myself after installing SR3 and it is definitely the syntax that IsaoShi
mentioned.  Just do the recommended changes and it will work just fine.

Boy, we really overlook the obvious sometimes.

MAT poses are applied in the Poses section of your library.  It sounds to me that you just have a texture which can easily be applied in the Material Room as described by **Jestertjuuh. ** Afterward, you can create an MT5 in your empty folder by clicking the '+' sign on the bottom of your Library Palette in Material Room.  Whenever you want to apply the soap texture, select V4, enter the Material Room and click on your texture icon.  Hopefully this will answer your question.

As jester posted, 25 gig runtimes is definitely not the way to go.  I tend to create project runtimes for 1 time use then delete or transfer them to disk.  It keeps my drive uncluttered and manageable.  And it just came to mind, don't discard your original zip or installer files.  Transfer them to a safe place and find a way to catalog what you have.  Content does have a tendency to accumulate rather fast and the last thing you want to do is lose that one item you would like to use down the road.