basically there are 2 things you can do to restore your Eeepc if one of the filters got damaged(Polariztion filter); whether due to an accident (some object scratched your screen), or due to a fault in trying to get the bright screen mod.
1-you can buy a polarization-filter for a couple of bucks and put it in your glasses, see here: http://www.youtube.com/watch?v=Du_AX7oE8HA
Or, 2- Cut out of the filter your Epc's screensize, and place the filter on your screen.
I would recommend the first, since the latter will give you bubbles in your screen. should you want to paste the pol.filter on your screen, there are 2 versions of LCD filter; one with and one without glue.
I would suggest the one without glue, since you can remove the filter any time (should you end up with bubbles), and because of the tft screen being made from glass, the filter will stick to the glass like a screen protector (vacuum layer).
forum link: http://forum.eeeuser.com/viewtopic.php?id=37300