Not sure if you are interested, but the 3d capabilities of CS3 PS I have found are as follows;
3D objects can be imported straight into PS CS3 but rules and limitations are to be considered.

Formats are;
.3D max (you will be happy to know)
.OBJ..,
And the 3D format for adobe’s acrobat.

default shaders can not be used

textures must be applied before import for edit in PS.
3D files can not be sourced from within CS3 and all textures must be in the same folder as the .OBJ file or whatever 3D file is used. It can not source the files from the computer as After Effects can (eg).

When 3D is imported into PS.., AND ONCE SAVED.., it will be given the extension .psd.., the extension for a smart object, meaning it will create a file that it sources from the original. So CAR.OBJ will become CAR.OBJ.psd. There is an option to work straight to the original file though. Original/master file untouched until right click on the texture layer and ‘replace texture,’ this will change the master file.

What this means is if you edit a texture in PS CS3.., it will not affect the actual file.., it creates a ‘proxy’ that it communicates with and edits, unless you check the option.

Once imported you must create a 3D layer.., double click that layer in the layer palette, then you will have access to the ‘object’ tool. It will show in the tool bar.., tools such as rotate, ect. This tool enables you to transform the object; position, and scale the 3D object. Double clicking on the layer the texture is on will reveal the texture file.

Specular highlight is preserved on import but can be checked off.., PS will generate the light source and as the object is rotated the light source will remain true to the object, that it the light does not move.., the highlight remains true as the object rotates.

Problems with textures in CS3 PS (considerations)
Procedural maps do not always show.., rather an image should be used. Generated textures (eg, noise) may not be recognised.
Unrenderable objects may also be imported, locators, hidden files, ect.., and can create ugly geometry.
Keep everything simple, eg, parent instead of binding, ect. Beware of CPU. (take it slowly or the program WILL crash).

For these reasons (and others I would guess) it is important for, because of the limitations of CS3, that a new folder with ALL assets be created to work from.

This is what I have discovered so far. I can demonstrate these to you if you need

Video is in PS another thing altogether and even more exciting,
Such as

Editing video
Compositing with blend modes
Cloning
Fixing
Keyframing
The list goes on and is amazing and very exciting.

WHAT ARE THE RAMIFICATIONS OF THIS FOR 3D and MAYA??