Those looking to protect their wonderful screen on their N97’s I highly recommend Clarivue.  I recently ordered and installed the protector on my unit and it is flawless.  I was surprised how much easier it was to install this protector from others i have used (Martin Fields, Invis. Shield).  The screen protector is protected on both side with a thin layer of plastic.  There are also two tabs located on the protector  one is for installation and mounting, while the other one removes the protective cover once it has been installed.  Although the unit isn’t perfect in terms of creating a perfect fit over the entire front it does a good job in aligning with the screen.  The protectors are currently available via Clarivues site @ 10.99 for two.  Below is a sample photo of the protector on the N97.

http://www.clarivue.com/detailx.asp?key=Screen_Protector_Phone_Nokia_N97