sunroof modifications

I have a 2006 EX and am interested in replacing the sunroof glass with a solid piece of metal or lexan glass so that I can put a fan and/or other accessories for camping. I bought a used roof. Question is how do I get the glass out? I don't see any screws holding it in so I am thinking it...

has anyone considered (or attempted to use) this product apparently made in Austrialia to install instead of the Honda skylight screen? It looks kind of promising. http://www.flexiscreens.com/users.htm