My 3900 is working with my radius server and remote users can log on, but the vpn client is getting the DNS addresses of the ISP on my PPoE vdsl.

How do I setup providing the DNS server address of my internal network so that users can find internal servers etc.?

The 3900 has replaced a 3300 - this was never an issue with the 3300 but I can't find where to assign DNS addresses to the remote connections