Thanks for the info, Michael.
It's my understanding that the 97 lenses are held in place with metal clips and can be removed without taking out the entire headlight assembly (or at least every single screw holding the assembly in place), is that true? Do you have headlight wipers on your car? Don't think the 97s came with wipers. That made things a bunch more difficult for me.
Check out this thread - very useful (for newer W202s, not mine)
http://www.club202.com/forums/showthread.php?s=&threadid=1051&highlight=headlight+lens