Migrating a DHCP databse for Windows Server 2003 2008 or 2012 including SBS

Migrating a DHCP database can be done with three steps.
1.  On the old DHCP server run the command netsh dhcp server export C:dhcp.txt all
2.  Copy that file to the new DHCP server.
3.  Run this command to import it netsh dhcp server import C:dhcp.txt all

Using netsh to add a route for Exchange 2010 Replication network

In Exchange 2010 when setting up DAG groups it is best to have a dedicated NIC for your heartbeat/replication network.  When doing this you do not want to put a gateway.  Instead you should specifiy manually using the netsh command a route to your other server.  Here is how it can be done.
show interfaces     
 (use this command to determine what interface to use)
add route “Internal”  (This command is pretty straightforward.  You specifiy the network you are trying to connect to and the second IP listed here is the gateway that should be used)
To check that it was completed successfully you can review the routes.
netsh interface ipv4 show route

To delete the route
netsh interface ipv4 delete route “Internal”