Sorry no-one gave you the specific advice you requested. I have the same problem with my Nikon D300 (which is otherwise in very good condition). I have seen a video in which the back of a DSLR camera was warmed gently with a hairdryer (to soften the glue around the edge of the glass) and the protective glass pulled away using a suction pad. I assume the replacement glass (hopefully obtainable on-line) already had glue around the edge and is presumably pressed firmly in place and left to set.
I am still researching this as I do not wish to pay a repairer for the cost of replacing the LCD screen itself when it may only be the protective glass which is fogged.