Yeah that sort of thing is delicate work but not too difficult. I'd suggest pulling it apart before ordering a replacement screen though, if you can't see physical damage it might be something as stupidly simple as a video cable being knocked loose

Apparently today is the day
http://www.kotaku.com.au/2009/12/the-psp-comic-store-opens-today/
Looks like I've found out what to do with the rest of the money I have in the bank. I need to read the rest of the star trek & transformers comics
okay, the comic store is online right now and I have to say I'm pleasantly surprised by the prices. au$1.75 for the majority of the content I looked at such as Aliester Arcane, Star Trek & older/classic Transformers. The newer Transformers All Hail Megatron series has a higher, but still not unreasonable, price tag of au$2.45.
Not looked at the marvel stuff yet so I'm not sure of their prices.