I had this problem where i went to go online and couldnt actually get on it cos of port 5730, i have been in touch with konami and sorted it, it is hard to explain but if you post what router or broadband you have in this thread i maybe able to help as i have a website where you can 'port forward' and the 2 ports you need to open.
Get back to me
Aj.
Get back to me
Aj.