I read the directions and searched the forums but I still dont understand how the lcd and frenzels and everyting else are atached to the case.

Thanks in advance.

One normally makes frames to hold the LCD and fresnels and then attaches them to the case in some fashion which allows for adjustment fore-and-aft. Lots of people use all-thread - long pieces of threaded rod. The all-thread is attached to the case and the frames are drilled so they ride on the all-thread.

Probably the best thing for you to do is to visit some popular plogs and check pictures of the way folks have made their frames adjustable.

An absolutely perfect build (VERY difficult to achieve) would allow for one to simply attach the LCD and fresnel frames directly to the case with no need for movability/adjustability.

Hope that helps!

Edit: Allow for some thermal expansion to occur within your LCD and fresnel frames. That is to say don't fit them in tightly but allow for them to slide a bit - say 1/16 to 1/8 of an inch.