hi, thnx guys i can now disconnect and reconnect using the command that Marv gave it to me. I still have two probs: 1-I noticed that the internet starts slow and then after few minutes it becomes as usual, but i don't know why. 2-Firefox is always in offline mode. If i want to browse, i should deactivate the offline mode and then it works, but after i close it or reboot it returns to the offline mode. It stocks with offline mode! Thanks.