Updating when offline

Andrew…
a) Yes.
b) Yes. Have a look @ this article (http://avgclick.me/UpdateAVG).
c) AVG personnel will clarify.
AVG Guru

I am considering using AVG in an environment where four computers to be protected is ALWAYS offline with no internet connectivity whatsoever. However, memory sticks and external hard drives etc. will be plugged in on a regular basis, so the machine will need so sort of virus protection. So my questions are:

a) Could the free version of AVG do the job?
b) How would we update the virus definition files etc if we are offline (can they be downloaded and applied)
c) The application in question is a commercial product for a specific customer. Would we be allowed to provide them with the free version. If not which paid for version could we use?

Andrew....
a) Yes.
b) Yes. Have a look @ this article (http://avgclick.me/UpdateAVG).
c) AVG personnel will clarify.
AVG Guru