Excuse me if this is a stupid question, but I've read so many different tutorials I'm just confused now, and everything I've tried doesn't seem to work! I haven't managed to find a tutorial that describes exactly everything that I want to do.

I've created what I think is a cool zombie character for V4.2, including textures and bump maps. The morphs use the "zombie" morphs from DAZ with a little tweaking of my own. I'd like to offer the character for sale, but I can't figure out how or where to save the files in order for someone else to convert their V4 into the character. What I want is for someone who, assuming they have V4.2, the basic morphs, and Morphs++, will just be able to load V4.2 and convert her into the ready made character.
Do I save the textures in the Materials library? If so, surely that will only load the textures and not the morphs?
Do I save the whole thing as a cr2, and offer that for sale?
Do I save everything as Pose (pz2) files?
Do I need to save the textures as one file and the morphs as another?

I've also created a bunch of poses for the character, which I assume I just save as normal Pose (pz2) files?

I'd really appreciate a step-by-step walk through, if anyone can help?

I'm on an Intel Mac, using Poser 7.

The consensus view (with some argument!) is that PZ2 files
are better for changing materials.   They are more flexible, and
you can apply them without going into the materials room.

Quickest way to get there:
Use the materials room to save a Material Collection
(MC6) file, and then edit it to make a PZ2. 

Editing is simple: replace

mtlCollection

near the top of the file by

figure

The texture files (JPG or PNG or whatever) should go into a Textures subfolder,
in the same way as the standard texture files for your figure.

 Yeah, I understand that, thanks. But what about the morphs?

You can include the morph settings in the same PZ2, if you want to...  though
I expect some people would prefer them as separate. 

 So they'd be a separate file, but still a pz2?

Yes, or you could mix the materials and morphs into one Pz2.  Save the morphs
in the usual way, then edit the two files together.  Find the 'figure' line at the
top of each, and paste the contents of the morph file, from the first  { bracket
after 'figure', through the last matching } bracket ...  into the mat file.

Some filtering will probably be needed.  The morph PZ2 will often incude a bunch
of settings that aren't needed for your character.  If you know that your settings
are only on the Head, then paste only the section for 'actor head'.

 OK, I'll try this. Many thanks for your help!