Currently I working in an environment that currently has 30,000 users. Some of these users work in remote locations that don't give them access to a LAN or a LAN nearby. They all have VPN access to the network, but I am afraid backups aren't friend on satellite connections

Has anyone ran into this problem and if so what have you done to provide a service. Most of our end users are connected to a lan, but 20% of them are remote users. We are trying to come up with a standard tool that can copy the data over even with encryption on the OS.
Our encryption device is Credant and our OS is XP 32.
Any ideas or solutions would be greatly appreciated!
Currently we are using data cables with a NIC between the USB connections to keep the files from being obsolete during the transfer. We are also using a VB app to pick up all the file types that are deemed useful. About 150 different along with PST, network profiles, and other personalities.
Thanks!
N2