Noob question re:quarantine

My antivirus software, Virgin Broadand PCguard, has determined that system32/ftp.exe and system32/dllcache/ftp.exe are infected with w32/backdoor2/emeb. Both files have been quarantined.

Assuming I should go through the read and run first sticky, do I have to take the file out of quarantine before doing so? It's probably a dumb question but it doesn't seem that obvious to me since I thought the idea of quarantining a file was to prevent it from interacting (for lack of a less crude way of putting it).

I don't want to delete these files outright instead. As unknowledgable as I am about Windows even I know it is probably not a good idea to just delete a file in the system32 folder. As far (or not) as I can tell FTP.exe is a needed file.