Hi there and thanks for answering , im not very computer wise but a little ive learned over the time :P i have kapersky antivirus and tought that once the antivirus was working the firewall would not interfere with anything else , once my gf gets home ill try your sugestion , if that still dont work , what do you mean by the even viewer ? is that in the task manager thing or ? hope we can find a solution because we got this game to play cooperative since diablo would not allow to save game in this way :)

Edit : it looked like my firewall was deactivated , i activated again and add sacred to be allowed to go trough , on both pc's but then she could not come in the game , i could see she joined but her char never made it in , she could write in the chat from the place where you see the game to join and i could see what she wrote but she could not come in , so i decided to add in kapersky the aplication of sacred and still the same , finally i decided to simply deactivate firewall totally and then she could join , ive been with both pc's conected for maibe 10 minuts now and she has not exploded , keeping my fingers crossed :D , will let you know how things go after a wile :9

2 Edit : yesterday we played for 2 hours with no problem at all , so it seems that as you said it was the firewall that was creating problems , thanks a lot for your help i can call this problem solved now :)