Virtumonde.sci Trojan not being detected by Norton

I've got Norton Systemworks 2006, on a Win2000 Pro system.

I also have Spybot SD, and reported that it had found a Trojan called in my registry called Virtumonde.sci and it's being read as a Browser Helper Object. It is also in two parts:

 

(SBI $C747BB01) Browser Helper Object

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{A8F38D8D-E480-4D52-B7A2-731BB6995FDD}

 

(SBI $53DCC2E2) Class ID

HKEY_CLASSES_ROOT\CLSID\{A8F38D8D-E480-4D52-B7A2-731BB6995FDD}

 

But my Norton Systemworks Antivirus doesn't find it.

 

What can I do?