Nice find with the mis-spelling in the error message. Mis-spellings are a good indicator to a possible virus, adware or malware and I have seen this is on a number of occasions.
From my own experience there are several things you can try. You can check the list of installed programs for anything unusual. You can check the list of add-ons listed in IE options for anything suspicious there.
You can use Sysinternals' Process Explorer to see if there are any suspicious child processes running under IE/FF/Chrome. If you haven't heard of this tool it's essentially a souped-up version of Task Manager.
You can also use Sysinternals' Autoruns to check for any suspicious modifications to the operating system's auto-start points. If you haven't heard of this tool it's essentially a souped-up version of msconfig's Startup tab. I suspect an autostart point may have been modified to allow the malware to startup automatically so Autoruns should help you find this. Whilst you are there, worth it If you check the Internet Explorer tab to check for anything suspicious.
Both the above tools you can find on http://technet.microsoft.com/en-US/SysInternals.