Networks

Is the DHCP server actually doing anything?

You have provided little to no actual information. I'd start checking with ipconfig /all from the workstations, maybe a little nslookup. Break out the big guns and do some packet capture with Wireshark to see if the DHCP server is doing anything at all. Check appropriate logs on the server and clients...

You need to disable the DHCP on the Server Platform and enable it on the Router.

The only way to get the Server to issue DHCP Addressing is to run the workstation/s through it not in Parallel to it.

Col

you run the connect to the internet wizard from the things to do list in the server managment console [look in left pane of the managment console].

make sure you check the box, my server uses a single network card.

run the wizard through to the end.

workstations need obtain IP address & DNS automatically.

when you join a workstation to the SBS domain, you use the connectcomputer wizard from the workstation web browser.

from a workstation open a command prompt, type ipconfig/all default gateway should be the router, DNS should show the SBS box, and an address from DHCP.

if not, check to make sure DHCP is running. from the SBS box, go to admin tools, DHCP. make sure there is a green check mark next to the server name. if not stop then restart DHCP services.

If at any time you stopped using DHCP services eg unauthorized the scope, you will have to create a new scope [new subnet] and authorize it. old scope won't work right if you unauthorized it and then try to reauthorize it.

To include your ISP DNS servers as #2 and #3 , you can add them to the DNS option in DHCP, but you must always have the SBS box as the first DNS server to use. the SBS box will forward unresolved queries from clients to root hint or forwarders. This is how clients get to the internet. The SBS box forwards queries and then sends the resolved query back to the workstation.