ISA 2006 Restore (import) and VPN

Our Isa 2006 is on a windows 2000 server and needs to be moved to a new W3k R2 server.
I was able to restore the whole Enterprise configuration but it seems that the remote access service doesn’t start.There is no base configs sent to the RRAS from ISA config(restored). Event if I change some settings on VPN section. Any idea why? I can setup the Ras manually but I don’t think it is recommended.

Thanks for your help