Unknow conection problem
 

Its realy stupid. If my firewall is off i can't connect.

I have tryed it on the computer from my father "with" the firewall on and it works just fine. The only diferents is that he has a super duper nasa computer and i only have a crappy 700mhz laptop. We have the same connections, we have both windows xp sp2 :( what should i do??? have anyone sugetions???