adding more than1 repaint.

I have recently downloaded 3 different aircraft repaints for boeing 737. The BA version works fine, but when i add the other two the livery never shows in the game. I have put deatils in config using the next number in sequence and trid two ways of putting files. 1st is to add all files in the downloaded folder. other is to copy texture.1 and then just change the texture.1.dll file (which is how i was told to do it for the ba file and it wokred)Any ideas on what i doing wrong?