NVG589 Can't Remote Desktop
So I had cable internet and used my RT-N56U and had no trouble using Remote Desktop to connect from my laptop to my desktop within my own network. Today I got setup with AT&T 18mbps and the Motorola NVG589 router and can't connect using Remote Desktop. I've confirmed the IP address is correct, and even assigned it as static so it won't change. I've also checked Remote Desktop settings on both the laptop and the desktop and they're ok, just as they were with the old router. I've tried IP Passthrough, port forwarding through NAT/Gaming and have had no success. Someone suggested using Public Subnet but after turning it on it asks for a public IPv4 address and start and end dhcpv4 addresses and I'm not sure what to put in those fields so I left it alone. How on Earth do I get back my Remote Desktop??