One of the ways to get rid of it is to boot your system in safe mode with networking and then find (online) one of a number of phony registration keys to trick the program into "registering" itself (after which it will "pretend" to scan your computer for viruses). At that point, it will stop hijacking your browser and you can load normally and get rid of the SOB; first by running a registry patch (available in several places) and then by downloading and running the MBAW program.
I'd like to take people who create **** like this and force them to listen to Meghan McCain's voice at full volume while tied up, covered with honey and set upon by fire ants.
If it's Meghan who is tied up, I believe I can tolerate her voice for a while.