first. i have an old version of aim. i think it was the first aim ever xP and like....its always worked when transfering files. and then i gave my computer to my friend to fix it. he gave it back and its clean and feels brand new. but when i installed aim and chatted n' stuff. i noticed i couldnt send and recieve files no more. i keep getting this message "Connection problem with (person's SN here); the file will not be sent. (Your 'Internet Connection Firewall' may be on. If you and your buddy are each behind a different firewall, then the connection will not work.) but i dont have a firewall program or any firewalls available. how can i be behind a firewall? i neeed help ASAP!!