is a free program that monitors all access to your file system and registry. Run that when you launch the system properties dialog you are looking for, then pause it and review the files/registry entries accessed. Among them should be the program you are looking for. Heck, maybe sysdm.cpl is the right one and you just have to pass the correct command line arguments to it. If that is the case, then you just need to search Google for the command line arguments it accepts (if any). You may also want to pass command line arguments to the control panel. For example, if type the following into a command prompt, I get the "Computer Name" tab of system properties:
You can read more about those options here
. Also note that you can pass command line arguments to a program when launching it using one of the overloads for Process.Start.
If you figure out the exact answer, post the answer back here. I'd love to help, but I don't have Windows 7, so I can't do any testing.