Just came across this, and thought I should post it here, according to Microsoft a critical vulnerability has been found in the Xp/NT/2k series of Windows Operating Systems, that can allow someone to run malicious code on your computer and basically do anything they like on it.
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There are a lot of Microsoft Windows flaws reported regularly, however the potential for problems with this one is particularly nasty. If you are using windows NT 4.0, Windows XP, Windows 2000 or Windows 2003, it would be a good idea to download and install the provided patch to stop anyone from taking advantage of this vulnerability - just to be on the safe side.