Removing Spyfalcon

My boss's home machine kept throwing messages that the machine was infected by spyware/ malware and that one needed to click the prompt to remove them. The machines looked very much like Windows's Security Centre warnings, but something about them wasn't quite normal. Clicking on them didn't produce any effect; and neither did there seem to be any spyware or similar programs in the startup menu etc (I used HijackThis and StartupList). Finally I booted into Safe Mode, and then clicking the link gave me a Page Not Found error (coz I wasn't connected to the net). Turns out the page in question was SpyFalcon.com, and from there it was easy to search the net and find a way of removing it. §