NAT routing with Server 2008

Hello! I have setup NAT routing with Server 2008 with 2 NIC cards.

Outside NIC:
IP: 192.168.0.20 (an available IP on our current subnet)
Subnet: 255.255.255.0
Gateway: 192.168.0.1
DNS: 192.168.0.253

Inside NIC:
10.0.0.1
255.0.0.0

Currently, I have this RRAS box acting as a DHCP server for the clients connecting under it.

Here's what works: Clients on the inside of my new NAT configuration are able to obtain an appropriate IP address (10.*.*.*), access the internet, and all resources under my 192.168.0.* network.

Here's what doesn't work (and what I need help with!)
I cannot access resources or computers within the NAT outside of it. For instance, pinging 10.0.2.1 (a DHCP client under the new NAT) from 192.168.0.253 (A resource server on the outer network) does not work.

I know that I am missing adding a route somewhere, to tell the network where to look for 10.* IP traffic, but I'm not sure where or what else I am missing.

Any suggestions?