Trojan.Zer​oaccess!in​f4 Infection in Services.e​xe. Help!

Need help removing Trojan.Zeroaccess!inf4. Infected file C:\Windows\System32\services.exe

 

Allegedly Trojan.Zeroaccess.B, Trojan.Gen, Trojan.Gen.2, Trojan.Zeroaccess.C have been removed/quarantined by Auto-Protect. Scan prompts manual removal of .Zeroaccess!inf4

 

Any help greatly appreciated as cannot remove it?

 

All the best...

 

Baron