To remove that cluster looks like a pain - check out the service manual. There's instructions in steps with matching diagrams.
http://www.nissanversa.org/generalfaq.shtml (to CodeRed or EV, that manual is under the FAQ section - shouldn't it be under the downloads section? And is it possible to have one download that has all the files in it?)
It's probably just plexiglass, and that comes with special cleaning instructions. From
http://www.rplastics.com/plexcare.html "The Number 1 Problem with Plexiglass acrylic is the use of incorrect cleaners. Yes, we said "cleaners". Please... never, ever, use cleaners containing ammonia. Cleaners such as Windex or 409 will harm your new piece of acrylic. Use only products specifically recommended for cleaning acrylic such as Novus #1, or Brillianize, and a soft cloth. (All are available in our showrooms). Never use a dry cloth or your hand to clean your acrylic! This rubs the dirt and dust INTO the acrylic as much as it rubs it OFF. First, blow the dust or dirt off, or use water and a soft cloth to float the dirt off. Then use a recommended cleaner to complete the job. Note: a mild solution of dish detergent and warm water takes off stubborn dirt easily without harming the acrylic if you've run out of Novus #1 or Brillianize."
This goes for pictures frames in your house that may be plexi, as well as parts on your car.
Hope this helps