Please be sure to read my 7 previous posts and check to make sure you have understood all of these recommendations and taken necessary steps to protect your system(s) as well as can be done..
From Microsoft at
http://www.microsoft.com/en-us/windows/enterprise/end-of-support.aspx comes these tidbits (both news to me):
Will Microsoft's Malicious Software Removal Tool be supported after April 8, 2014?
Microsoft's Malicious Software Removal Tool is aligned with
the company's anti-malware engines and signatures, and as such the
removal tool will continue to be provided for Windows XP through July
14, 2015. However, any PC running Windows XP after April 8, 2014 should
not be considered protected as there will be no security updates for the
Windows XP operating system.
Will Microsoft Security Essentials be supported after April 8, 2014?
Microsoft Security Essentials
will not be available for download on Windows XP after April 8, 2014.
If you already have Microsoft Security Essentials installed, you will
continue to receive anti-malware signature updates through July 14,
2015. However, please note that PCs running Windows XP after April 8,
2014 should not be considered protected.