Two scopes on same subnet in Windows 2003 DHCP

Is it possible to configure 2 or more scopes with different options on the same subnet in Windows 2003 Server DHCP?
Our network is 10.0.0.0 with 255.255.0.0 mask.
I would like to separate different kind of computers on network to get IPs from 10.0.1.x and 10.0.2.x and 10.0.3.x ranges. I would do this by reservations.
These separated computers should see eachother on the network so they should be on the same subnet. But each range has to get a slightly different kind of setting from dhcp server (different dns, different def.gateway).
Any ideas, how to solve this? Only way to create different subnets, with different scopes and use routers?