Multi-subnet networks

I have two separate networks, each with their own separate internet
connections and gateways. Each of these networks consists of PC's on a
variety of platforms networked using SMB. Between the two machines I
have a multi-homed Win 2003 server.

I would like to configure the two networks and the server in the middle
so that:
1. Shared resources from either subnet are available on both subnets.
2. Each subnet uses separate DHCP assignments (which are currently
provided by the DSL modems)
3. Each subnet uses it's own internet gateway.

Any suggestions?

bump for the experts!

paul.RemoveThis@businessoftware.com wrote:
> I have two separate networks, each with their own separate internet
> connections and gateways. Each of these networks consists of PC's on a
> variety of platforms networked using SMB. Between the two machines I
> have a multi-homed Win 2003 server.
>
> I would like to configure the two networks and the server in the middle
> so that:
> 1. Shared resources from either subnet are available on both subnets.
> 2. Each subnet uses separate DHCP assignments (which are currently
> provided by the DSL modems)
> 3. Each subnet uses it's own internet gateway.
>
> Any suggestions?