Hi, I have bought fifa 2007 on psp and I am having much problems to play it online!!

I can play with my account full matches, but 9 out of 10 I can't even start the match cause it says right before the kick off: 'there has been a connection fault, couldn't connect to the other player....'???

So it is very frustrating.. When I start or join in totall 30 games a day, I can play max 1 or 2 games...

Sometimes I can play but suddenly in the middle of the match, It says: 'there has been a connection fault, couldn't connect to the other player....'???

What must I do?? Some people say, that I have to open some portals?? But how can I do this with the psp??

Help me please..

Thank you very much