It is possible to have concurrent users on XP by adjusting the terminal services settings. Once that is done it is also possible to have multiple RDP connections to the local host (the same computer).
I found that information at:
That article lists 3 ways to get it to work. The way I would expect to use is:
Workaround 2: Connect to RDC Terminal Services at Different Non Standard Port
Another workaround to the blockage of local host Remote Desktop connection in Windows XP is to connect to localhost (127.0.0.1) address on another port other than the default (3389). The hack is especially useful in Windows XP SP2 and SP3 where 127.0.0.2 forwarding IP address for localhost connection no longer work. By default, Remote Desktop listens and connects on port 3389. See the guide to change default Remote Desktop Terminal Services listening port, and how to connect using non-default port in Remote Desktop Connection.
That second link basically says:
For example, to connect to port 7777 on a computer that is named “remote.computer”, type the following information into the Computer box in Remote Desktop Connection as shown in the illustration:
remote.computer:7777
Or, I would say in the RDP GUI computer name box put <computername:portnumber>. Of course, that port has to be open in the first place.
I haven’t tested any of this out, I’m just keeping it for the future.
This relates to my problems with using AutoIt3 scripts on some programs while not interfering with current work on the same computer.