Hardware GBA LCD screen

[ReiKo90]

Hello,

I'm having problems with little dust or something that is white-dot like on my GBA LCD screen.

Nothing big, but it sometimes bugs me when I play games.

Problem is that I would like to try to clean it to remove that white dot, but I don't know how to remove top part of GBA so I can reach LCD screen.

First problem is the rubber "screws" that I don't know how to open.
http://img13.imageshack.us/my.php?image=gba.jpg

It's not dead pixel because that "dot" is still there when i turn off LCD display.

Could someone with experience with these type of things help me?

Thanks.