OK, so that wasn’t the last entry on Vyatta.
In the upcoming versions of SBS, a new product was annouced. (http://blogs.technet.com/b/sbs/archive/2010/07/12/announcing-previews-of-our-simple-and-affordable-servers-for-small-businesses.aspx)
This version of SBS (codenamed Aurora), is quite similar to Windows Home Server. As such, it does not appear to run a DHCP Server service by default. Therefore, the DHCP Server service needs to be configured on the Vyatta router. Three command lines will do the trick.
set service dhcp-server shared-network-name ETH1_POOL subnet 192.168.100.0/24 start 192.168.100.100 stop 192.168.100.199
<<Name the Range, set the subnet, then put the starting address and ending adddress for the leases
set service dhcp-server shared-network-name ETH1_POOL subnet 192.168.100.0/24 default-router 192.168.100.15 <<set the default router
set service dhcp-server shared-network-name ETH1_POOL subnet 192.168.100.0/24 dns-server 12.34.56.100 <<set the default DNS server