Out of Band Release to address Microsoft Security Advisory 2286198
On July 29th Microsoft released an out of band patch to address security advisory 2286198. For more details see Microsoft Security Response Center blog. More technical details can be found at the Microsoft Malware Protection Center post: Stuxnet, malicious .LNKs, ...and then there was Sality.
Of course you can always point your mouse to the Microsoft Update.Or launch Windows Update from your Windows 7 Start Menu.