Philips S800 dust removing procedure?

Hi,
Detailed in the screenshot with picture in the link, I have philips
S800 and this phone accumulates a lot of dust inside external screen,
also annoying big dusts can dive into internal screen from headset
holes.

But i want to ask for help for internal screen's dust problem:

Anyway, what is the removal procedure the dust which is under internal
LCD screen?
Removing front screws(beneath internal screen) is enough for opening
glass cover of internal LCD?

If a Philips S800 user helps me to get the dust out, i will pray for
the helper i promise.

Screenshot:
http://img339.imageshack.us/img339/7...ipss800cf1.jpg

Thank you...