Regarding remote play PS3 - PSP. Password

Hi.

Could anyone please help me regarding Remote play.

I have tried to connect my psp to the my PS3 via internet. Then the message appears " You must sign in to PLAYSTATION network both on this system and on the PS3 using the same sign-in id etc, etc"

I have registered my PSP on the PSP network, but I am not sure if this is the same place as the PS3. My problem appears when I type in my e-mail address on my PSP(and I know that I am not doing anything wrong then) But the PSP also wants me to type a password. Which password is this. I have tried all my passwords without succeding. Is it the same password used on the PS3(which I cannot remember because the log in happens automaticly) or what? 

I am grateful for any help that I can get.

Best regards 

1. ur email address

2. the password ur ps3 account is under