How to open the UMD-Door? [PSP-Slim]

[Draygon]

Hi,
I'm new in the PSP-Scene, but i want to change my UMD-Door. I just want a new one...
So, how can I remove the old one?
I searched in this Board, but I didn't find any screenshots...
It would be really nice, if someone could post a little tutorial and a few pictures!
Thanks at first, and sorry for bad english.
greezes,
dray

[Nemesis]

wiki:

https://www.acidmods.com/Wiki/tiki-index.php?page=PSP%20Slim%20%26%20LIte%20Disassembly