Here’s a videodemonstration from Gametrailers.com showing the new Skype fucntion on PSP.
Sony comfirmed today that Skype will only work on PSP Slim (PSP-2000) because it has 64MB RAM. The old PSP (PSP-1000) only hav 32MB RAM.
“Although PSP-1000 and PSP-2000 are identical in basic functions, there are differences in hardware specifications to some extent and, for that reason, PSP-2000 may differ in features from PSP-1000. We had studied the possibility of supporting Skype with PSP-1000 but had to give it up because of the smaller size of main memory on PSP-1000 series.”