First, if you want more control over your modems then you need to put Haxorware on them.
Then you be able to control just about every aspect of the devices.
The Motorola SB5101 is a lot easier to mod then the SA, but you still need a JTAG programmer.
Second, if your machines are getting a WAN based (routable) IP then you just need to get a NAT device.
Any BestBuy/Walmart "router" will give you NAT for your network.
As far as two modems go, you have to decide want you want to do with them.
If you want load balancing then you need to look for some sort of a dual WAN router.
Either way, if you want your machines to be NAT'd (192.168.x.x, 172.16.x.x, 10.x.x.x) then you need to pick up a router/gateway.
Then you be able to control just about every aspect of the devices.
The Motorola SB5101 is a lot easier to mod then the SA, but you still need a JTAG programmer.
Second, if your machines are getting a WAN based (routable) IP then you just need to get a NAT device.
Any BestBuy/Walmart "router" will give you NAT for your network.
As far as two modems go, you have to decide want you want to do with them.
If you want load balancing then you need to look for some sort of a dual WAN router.
Either way, if you want your machines to be NAT'd (192.168.x.x, 172.16.x.x, 10.x.x.x) then you need to pick up a router/gateway.