WHAT WILL HAPPEN IF I DONT USE A UV FILTER ON MY PJ? AND SHOULD MY LCD BE MOUNTED UPSIDE DOWN IN THE BOX? AND ALSO WHICH LENS IS WHICH I KNOW IVE SEEN THE WHOLE PROCEDURE SOMEWHERE BUT NOW I CANT FIND IT.\

THANKS

then you should use a lexan instead the glass to stop uv from reaching the lcd screen, you WANT this. Otherwise you can expect lcd yellowness in the future (leave a white paper in sunlight for a couple of days and see what happens if you dont trust me)

the lcd should be mounted upside down, the fcc pointing the triplet.

read the wiki for the lenses thing, its all there!
http://www.lumenlab.com/protectedwiki/Find_Focal_Length

Dont rush things, take your time and READ.
good luck