[Samba] roaming profiles stored on BDCs? how?

[Adam Williams]

I have a PDC named GOMER w/ IP of 10.8.3.37 and a BDC named BLDG2 w/ ip 
of 10.8.7.2.  when someone on the 10.8.7.x network using the WINS server 
of 10.8.7.2 logs in and out, their roaming profile is stored on the 
PDC.  is there any way to have the roaming profile stored on the BDC?, 
because I will have other 10.8.x.x networks and some of these remote 
sites will be using DSL and I don't want the profiles transfering over 
DSL.  any suggestions?