So I run this program on two separate machines.

Each machine has a dedicated but separate hard drive plugged in to store the cards on.

I just bought a fairly large slug of cards due to the discounted buy in price (THANKS TOTEM!!!)

My question is: can I download the cards on one machine and then just copy them over to the drive on the other machine without having to download them again? Saves me a bunch of time and Totem a bunch of bandwidth...

Both machines use the same login information.

Anybody know if I can do that?

So long as the account you are using is the same then the cards will work on either/both machines. As you say that you are using the same login details, you should be good to go.

All you will need to do is copy the models folder from one machine to the next.

To be honest, I run on multiple machines myself. I down load on one PC and then sync the folders to the others.