Targeted attacks on Wordpad Zeroday

Computer Associates blogged over the weekend on increasing attacks on the Wordpad zero day originally reported in December.
In the attack a malicious document is created with the extension .DOC, .RTF or .WRI. You must manually open the document for the attack to take place. If Office is installed, .DOC files will likely open in Microsoft Word which is not vulnerable. However .WRI files will likely still open in Wordpad.
Microsoft reports that this issue does not affect Windows XP Service Pack 3, Windows Vista. Really you should have that installed by now. To obtain this update go to http://update.microsoft.com.