I need help..and I found this page by accident looking for something in search and thought it could help me...about half an hour ago..I was talking on MSN messenger with who I thought was a friend...after a couple of minute talking he tells me it's not my friend, but a friend of my friend....well...we kept talking...I got really mad at him and the last thing he said before he went offline was that I shouldn't talk to him like that because I didn't know who he was....I then proceded to call my friend...he said that who I talked to was no friend...but a hacker....now I'm afaid that because of how I talked to him, he might hack me...and I just survived the SASSER virus...I don't need this now. I'm here because I know nothing of computers. The only protection I have on my computer is Norton Systemworks 2002 and what I know of this is how to do a scan for viruses. My friend said I needed a firewall....I don't know what this is, only that it's for protection, so I know less where to get one and how to put it in my computer. So if some one can help me, THANK YOU!!!