Really need some help, iv sent messages to 2 people who might know but they havent replied...

I've got the old, big ps2 and an adapter in the back of it, its linked to the back of my pc and all connected up.

When i go on a game i get the error -612 and i looked it up on a site linked on here and it told me that i have closed ports in my firewall or network???

Please help im so desperate to get on ps2 online, its the only xmas present i was looking forward to :(

stoneystag4eva