How do i make this warning stop and what does it mean?

You can download combofix first to remove most the virus from bleepingcomputer.com then go download malwarebytes from softpedia.com or cnet.com . After that you can use superantispyware to clean up the rest and protect your computer in the future by using better protection than you have now such as avira with online armor or outpost firewall or a paid suite such as Kaspersky.