You can do two things...
(1) If your router supports it, have a different 'port' assigned in the router for each computer. (for example, port 14111 pointing to port 3389 on computer number 1, port 141112 pointing to port 3389 on computer number 2, port 141113 pointing to port 3389 on computer number 3,.. etc)
Then, simply use the RDP client with a port in the address. You simply add a 'colon' after the IP/name of the computer, and then the port number. For example...
Computer 1: 123.456.78.9:14111
Computer 2: 123.456.78.9: 14112
Computer 3: 123.456.78.9: 14113
(etc)
(2) you can set the registry of each computer to 'listen' on a different port. Visit Microsoft's
Article 306759 -
How to Change the Listening Port for Remote Desktop
Then, follow the same procedure as above.. and connect to Computer 1, 2, 3... etc
- rp