There is a malware out there that makes itself look like it’s the XP Security Center, but it’s not. It’s malware and will tell you that your computer is infected with a virus. The real XP Security Center will never tell you that your computer is infected with a virus because it is not an anti-virus program. It only monitor’s your security software, which includes your anti-virus program.
In any case, the way to remove it is by downloading Malwarebytes’ Anti-Malware.
Here are the instructions:
Instructions to Remove XP SecurityCenter Malware