I've tried to play Worms open warfare 2 online but every time after i typed my password i says the profile doesn't exist, or something like that. So i wonder if someone could help me with:
1.Where i shall register
2.If it is at this site or thq, what am i doing wrong? (because i am registered on those pages)

PSP version:

You don't register on any website, it creates the account when you try to connect for the first time. If someone used the same profile name as you then you will need to rename your profile. If you forgot your password then you have to create a new profile.