I just want to know if a person can get all my information like my passwords, email addresses and any other information in my pc just by knowing my IP address and can they get my IP address just by chatting with me in a chat room?:confused:
If you make a direct connection with them...i.e. file transfer or one on one chat then yes they can get your IP. However just by having your IP doesn't mean they'll be able to get your passwords, etc. But if you install a file from them, perhaps that file you install could be a keylogger that would send them everything you type on the keyboard.
If you haven't installed anything from the person in question then I wouldn't be too concerned about this.