When i signed into msn, i spoke to somebody and it came up with something that included a link...so naturally i clicked the link and it has now put some sort of a virus onto my computer, which is using my account and sending the same link i recieved to all of my contacts..and then after it sends them the link i can not open up a conversation with them unless i sign out and back in again..and when i tried to go into system restore to go back a day..the virus has deleted all my restore points, and also when i try to go into windows firewall (which it disabled) and my norton firewall and all my virus software, it just exits them off straight away before i can do anything, so i went into run then went to msconfig, went into startup and that also closed off. but then i opened it up and very quickly went into startup then clicked disable all, and then apply, and then i restarted my computer..after that my computer was fine and i could go into my firewall etc..but then when i went back into msconfig to enable everything again..because i was unsure about what i had disabled.. it started doing it again...has anyone ever encountered this before? Help will be much appreciated..and i would much prefer to avoid having to format my computer.