This is a hard question to ask so I'll do my best
:blushing:  After I render a picture from Poser, I want to erase certain parts of the model within Photoshop CS 2 without erasing the background.  I have no clue how to do that.  I'm actually trying to follow a cool reflection TUT

http://www.uniquerenditions.com/ParadiseWaterTutorial/BatherTutorial.htm

by Linwhite but I get lost when trying to erase portions of just the model.  TIA.
Adrian