Lifehacker has a blurb about tracking the Microsoft Word [tag]zero-day exploit[/tag].
For those unfamiliar with them, so-called zero-day exploits appear the same day as the vulnerability, making them particularly difficult to thwart. If you want to be as diligent as possible about keeping your PC secure, visit the site regularly--and consider installing eEye's Blink Personal, which promises to defend against zero-day attacks.
So, for those among us unfortunate enough to be forced to continually rely on [tag]Microsoft[/tag] to fix their security issues, you might consider checking out eEye's solution. It doesn't look as thought Microsoft is going to patch this within the next few days.