removal of trojan horse, w32.spybot.worm, w32.gammima from symantec endpoint protection

Hi,

 

I did a full scan using symantec endpoint protection the following risks were detected:

Trojan horse

W31.Spybot.Worm

W32.Gammima

 

they are currently in quarantine.

 

how do i remove them???

please note: i am not very computer saavy

i am running windows xp

 

Thanks