talk to some of the guys around here who have assimilated labs, and groups of computers that arent connected to the internet, if they are on a network, you could set up one as the proxy and only have to update that one. I am assimilating a lab soon but luckily for me they are connected 24/7 so it will be easy to set up. The guys around here who have done stuff like this would be glad to help you get it going, most people around here are pretty helpful, so dont be afraid to ask, and dont worry about not having a mean machine, if all you can do is a few blocks a day, thats great, every little block for TA is needed. welcome aboard!