I have DSL on my pc, and it's all put on standard settings. Besides installing and registrating I haven't touched any of the network settings. Local computers can't connect to mine, they can't connect through my IP-address, even a simple file can't be transfered to another computer through f.e. MSN. When it comes to adjusting settings like firewalls, I wouldn't know where to begin. But i doubt it has to do something with that. Even if it's something in my settings that needs to be changed, like a simple check box that needs to be enabled, I wouldn't know where to look for it. I can tell however a message that shows when a transfering file can't be downloaded to another computer. It says that my internet connection is blocked and that I need to make contact with the provider or system manager or something. If there are more specific details you need to know, just mention it. Thanks.