I've got a virus. Every time I try to click on a google link it redirects me to a random page?

[Casca Longinus]

You have a redirect, it's usually a rootkit. Run these tools.

TDSSKiller, it's a small executable, no need to install. Here is the direct link:

http://support.kaspersky.com/downloads/u...killer.exe

Install, and run a full scan with SUPERAntiSpyware, it's free:

http://www.superantispyware.com/

Those two should rid you of the malware, if not, go to this site, and run these antirootkit programs until one gets it:

http://www.windowsreference.com/security...r-windows/