answer:Short probably nothing will happen. It’s conceivable something might, though. Longer a) Generally not. Very unlikely. Only if they know what they are doing, have their software set up to do so, and bother to use it on your session. b) Depends on your settings in Windows. Someone here can probably tell you what Windows 7 defaults are, but I doubt that even Microsoft is lame enough to still have defaults set so that establishing a wifi connection would open your files to them by default. However if you have gone and set up your laptop for unsecured network file sharing, your shares might be available. And if the person with the wifi network is a hacker hoping you will connect to their network, there may be hacks available for Windows which could allow them to do something like that. but if you have Norton running and update it and windows with the latest updates, even that may be unlikely to succeed.