when CS3 came out i got all excited.., but the 3D tools were a let down.., many limitations. not many formats, 3 i think, the google format, Max and OBJ. the objects had to come in with a shader (i think,?? something like that) if there was no texture. the texture file could be referenced or worked on destructively. So basically you could have your model in CS3 PS, the texture map imported with it (i think) and you could work on the texture map as a separate file but because it was connected to the model it would update as if you were painting onto the model.., long winded and something like that. it was as confusing as i just made it

Mirek