The only good (and also pretty odd) thing about adware is that if you look good enough, there's usually a very plain uninstall button hidden in your program files. It will uninstall the adware for you. It's almost as if they thought someone was going to install that stuff voluntarily.
Anyways, if it's in your extensions, just delete it. If it says it's installed by the company or something similar to that, run a virus scan with firewall and it should detect it eventually.
