Ah, this is fun.
Microsoft have discovered a wee bug in its lastest operating systems which can allow hackers to take complete and utter control of your computer with almost laughable ease. Nice.
If you're running Windows 2000 or later, amble on over to the MS update page and download at your leisure.
Of course, if you're one of the tinfoil hat brigade, you might be intertested to know that the US Department of Homeland Security advises the installation of these updates ASAP.
Oh dear, I can hear conspiracy theorists' heads popping all over the nation..