PIX to PIX VPN - DHCP and Domain Problems

Hey guys,

I think I am having trouble with my firewalls.  I can't seem to obtain anything from the DHCP server (which is on the 20.0 subnet) if they are outside the subnet 20.0.  In addition none of the servers/computers outside the subnet 20.0 can join the domain either.  Is it possible that the firewalls are blocking the traffic.  I am not a PIX guy by any means.  So any help resolving the problem would be a great help.

Here are both of my configs from my firewalls.
http://wedestroyed.com/configs/506e.rtf
http://wedestroyed.com/configs/515e.rtf

Also here is a quick diagram of how the topology is set up.


           0.0 Subnet <-----> PIX 506e <---------VPN----------> PIX 515e <------------> Inside 20.0 Subnet
                                                                                              |
                                                                                              |
                                                                                           DMZ
                                                                                      10.0 Subnet

Thanks