Before I go try and put all this great knowledge to use from reading all of these 50 page threads

.... I want to know how I can put a verizon phone back to its factory condition, should I need to go back.
My phone came with:
ROM Version 2.09.605.8
Radio Version 1.30.60
There is no ROm available on the HTC or Verizon Site (that I could find) and I'm not sure where to get a radio file...
where can I get verizon versions of the rom and radio above...just in case?