Files Opening Split up in Mult Programs

This is happening to MANY of my files! I see a file, then click to open and lo and behold I see a list of strangely titled items that appear to be opened up in various programs -- programs like Dreamweaver and others that I never intended them to use. One example is I have a map I saved of a bike trail. I try and open that map and it's in pieces. I see a list that looks like everything has been taken apart and there's a program for each part to open separately! The advertisement banner is one part, etc.

In looking around, I thought "indexing" was my problem...if it helps you solve my problem, just know that I see that I have nearly 8,000 items indexed ...ha ha and I didn't do this! Another clue that might help you help me is that I keep seeing an error when trying to rename a file...it says "THIS ACTION CANNOT BE COMPLETED BECAUSE THE FOLDER OR A FILE IN IT IS OPEN IN ANOTHER PROGRAM" ...at the time I see this error message, it does not appear that any other programs are opened!

IT'S DRIVING ME CRAAAAZZZYYYY!!!! I NEED HELP, PLEASE!!!!!!!