well im not really going to post anything long.. just few small things..
first.. read what zhugeliang said.. and listin.. hes one of the only people who knows what hes talking about.. and
second.. EVERYONE needs to stop thinking your computers are so insicure.. seriously.. just get a "decent" virus scan and your basically safe.. windows isnt the most insicure os in the world.. considering how masivly used it is.. its considerably safe..
virus scan will keep out little trojans (that most wanna be hacker kids.. who get on yahoo and aim to scare people use) and then they are worthless... because they dont actually know how to "hack"..
if you want to see someones ip you have to direct connect and use netstat -n in the command promp.. (use netstat -n then direct connect with the person and type netstat -n again and see whats new) even that doesnt work everytime though..
but why bother? just tell the kid hes a idiot.. and leave you alone.. someone posts this same thing on here seems like once a week