Quality of Service: how to limit W2K3 (RAS) VPN bandwidth usage

Hi all,

We use two W2K3 RAS servers, geograficly seperated, with a
dail on-demand VPN connection between the two of them. Now
that the connection is up and running we want to limit the
bandwidth used by the VPN connection, preferibly without
having to buy expensive extra soft and/or hardware.

Does W2K3 in any way support Qos or what ever kind of
bandwidth control mechanism? And if so, can it control VPN
bandwidth?

With kinds regards,

Sander van Beek