Computer hacker keeps attacking me on msn HELP!?

ok so it has happened before he/she wtv stole my msn account right after they invited me to add them, so i changed email, but he/she got me again after a few months, this is really pissing me off as it would for anyone. i talk with my friends and he says change my ip adress i did that, i also uninstalled my old msn and installed a new one that i downloaded, is that enough? he can still get me (how i know is he keeps adding me on msn with threatening names on em, i have saved screen shots of them). so if anyone has any ideas to what i can do please say so.

i have tired that and they dont detect anything, or if they do they clean it but other than that nothing changes.

Get an anti-virus program.
This is is free
http://free.grisoft.com/doc/download-fre...

Then install spybot also free
http://www.safer-networking.org/en/index...

Make sure you do they full updates then run a full scan of your computer.

i also uninstalled my old msn and installed a new one that i downloaded, is that enough? he can still get me (how i know is he keeps adding me on msn with threatening names on em, i have saved screen shoi also uninstalled my old msn and installed a new one that i downloaded, is that enough? he can still get me (how i know is he keeps adding me on msn with threatening names on em, i have saved screen sho

just tell all your friends its a hacker, delete that account and make a new one. get everyone to add you. pass ur addie round at school ;) hope this helped. xx

Go on the MSN website & change your password.

Next, run a virus scan to see if you have viruses.

If they keep getting you, tell all your friends that the person on your MSN isn't you.
Get a new MSN address and give it them.

If the person gets your new MSN address, I think you need to think more about who your friends are!