Somehow people have hacked my MSN. Apparently they can link into my conversations, but I think they've got more access to my computer than that. I'm unsure as to how many there are, but they seem to have had access to my MSN Logs and so I doubt other files are out of their reach.

What the heck do I do about them? I feel a little violated by this, no privacy D:

I'm running my virus scanners, but is there any info you guys have on who/what this is and how I fix/prevent it?