Zone Alarm quarantined a Rootkit.Win32.Podnuha.bxq on my computer. Went on line to read about rootkits and now I'm very alarmed. As I understand it, a hacker, using a rootkit, can create backdoors to my computer which they can access even after the rootkit has been quarantined. Could not find any information about this specific rootkit and was wondering if anyone knew anything about it. I'm thinking of wiping my hard drive clean. Now I'm concerned that the data on my back up hard drive might be infected. Any information would be appreciated......

Operating System:Windows XP Home Edition
Software Version:8.0
Product Name:ZoneAlarm Internet Security Suite