1.1) Select the object whose movements you want to save (probably the PDM). Open the Poses library. Click on the litte "+" at the bottom. You will have the option to save a single-frame pose or a multi-frame animation. Simple!
2.1) Select the object you want to apply a map to, and open the Materials Room. There are several colour indices, and you want Diffuse Color, in the top left. This is the "basic" colour of the object. The box immediately under the name has the basic colour, and the larger square box under that is for applying bitmaps. Basically, the bitmap is superimposed over the basic colour. This means that if you are using one, you will normally want the Diffuse Color to be white. Load an image by clicking on the square box. For example:
You can load any image, so try a few and see what effects you get. Basically, there are two sorts of images you can apply. The first is where you have an image that is some kind of pattern or texture, and you just apply it and see how it looks. For example, you might have an image of chain mail, and you can apply that to pretty much anything and hope it looks good. The textures that come with Poser are like this.
The second way is if you have an image that is designed specifically for one prop or figure. You use UVMapper to create a bitmap based on the object, and this basically tells you where on the image you should paint for it to appear where you want on the object.
It's probably simpler to show this than explain it. Kinboat's Kilt 4, for example, generates this image when you put it through UVMapper:
So this means you can paint in those areas on the image and know that they will appear in the right place on the object, like this:
[EDIT] Double cross-post! Ah well...