facebook gives toolbar/ad Virus?

[kingoforges]

Well i think that when you download the skype video thing on the chat box gives a Ad virus same thing happen on a friends computer so i am positive it does....what should i do i have a old backup on a external hard drive should i go ahead and do that? the virus does nothing pretty much my McAfee Blocks it from doing anything and its been about a week so idk. I need help :/