msn messenger , messages from random porno links?

[steveo3002]

i keep getting a message pop up from some random name thats not a contact , to the likes of " im a hot babe click here to see pics"

i run ccleaner , avira, malwarebites and superantispyware but the messages still pop up

any ideas how to get rid

[steveo3002]

any ideas where to reset that option?

just had a look and cant find it