Ghost 15 cold boot antivirus question

 

Hi,

I noticed in the cold boot with the norton CD there is the option to scan the computer for viruses', in doing so you can select the updated virus definition to use. The issue we have is our computers are not connected to the internet, I know you can download the exe of the latest virus update but then one needs to install it since it is an exe file. Is there a way to put the new virus definitions on a USB key and have Ghost 15 access the USB key for the virus definitions during a scan?