Possible to add new things/skins to Sims2 Pets PSP?

i hear w/ some games you can edit pics and whatnot not is this possible with Sims 2 Pets Psp?

yes i'm using a CSO of it Yes i own a copy, yes i know the no Piracy talk rule but i got my psp used and lately noticing that the UMD drive is beginning to wear out (longer load times getting nosier) and yes i use CSO over ISO as i only have a 2GB Memory stick Duo (w/ it my music emu and psptube++ i got only 468MB free ;-;)

any way to edit the CSO and add a Sims 2 skin? like say custom dragon ones out for the sims 2 pc edition

You Could Uncompress To ISO Then Open The ISO As An Archive And Use An Editor To Edit The Skin Files,

That Means Replacing Other Skins Though

IDK If You Could Port Sims2 For PC Skin Files Into PSP Version..

Worth A Shot Anyway