[After April 8, 2014, Microsoft will no longer provide security updates or technical support for Windows XP. Security updates patch vulnerabilities that may be exploited by malware and help keep users and their data safer. PCs running Windows XP after April 8, 2014, should not be considered to be protected,

Without critical Windows XP security updates, your PC may become vulnerable to harmful viruses, spyware, and other malicious software which can steal or damage your business data and information. Anti-virus software will also not be able to fully protect you once Windows XP itself is unsupported. ]
http://www.microsoft.com/en-us/windo...ofsupport.aspx


If you are adventurous and/or don't want to buy another Microsoft Operating system.. there are free operating systems.
Called Linux distros/distributions many styles some are nearly the same as windows xp.
If you know how to download and burn an ISO CD /DVD you can get many to try called a LIVE CD, they run from the DVD drive so you can test it out to see if you like it.
Or you can buy a cd/DVD for a low cost.

Here is more info and the page with the major distros -
http://distrowatch.com/dwres.php?resource=major


If you have any questions just ask.

Right now I am using Xubuntu on my older laptop and just installed PCLinuxOS (MATE) on my desktop, but I have sampled many distros over the years.