Microsoft will be ending support for both XP SP3 and Office 2003 in April 2014. So what exactly are the implications? Primarily, Microsoft will no longer be issuing security patches, software updates or bug fixes.
This will potentially leave your PC/ Laptop open to malicious attacks.
The good news is that many anti-virus companies are planning to keep on updating their products for at least a year, so you will have some protection against malware.
However, you will find that many independent software vendors are likely to phase out support, so new updates or patches they issue may not work on with these products.
Bottom line; unfortunately, if you are using XP/ Office 2003 the time has come to update!