XP Security center disabled

I'm running xp sp3 a a virus has infected my machine, security center is disabled, however there are 2 security center services which appear in the services list, neither are active but I can't switch the security center which monitors from disabled to automatic, when I attempt this is says that the service name is already used? any ideas?

• › [Solved] Why is Win XP Security Center service listed in French?
• › xp security tool 2010
• › Windows Security center Disabled
• › Uninstalled AVG but Windows Security Center says it's on
• › SAS found Disabled Security Center and Virus Scan
• › Windows security center problem
• › Virus disabled antivirus and Security Center