Are you sure you are issuing the command just like that?
It is
NOT:
Media Center 22.exe /MCC 22001,9You
must use:
mc22.exe /MCC 22001,9Note the lack of a space after the comma before the parameter, and the use of the
MC Command Launcher, not the actual application executable.
Also, Media Center must be running (at least in Server mode in the tray) or these commands will do nothing. This is by design. The MCC's only work if Media Center is running. If you need to launch it first or call it to the foreground, you'll need to call mc22.exe /Start first.
Lastly, note that using MCC_THEATER_VIEW (22001) to navigate directly to items in Theater View's Media Views is unreliable if you have changed the order or content of the Views substantially from the defaults. For example, I rearrange my Video views to be "first" in the heirarchy, rather than Audio, and so navigating using 22001 is unreliable when using pretty much any of the parameters other than:
0 - Toggle
1 - Home
2 - Playing Now
The others all go to specific places in Theater View, but not the ones intended (and generally, not exceedingly useful ones). It works best (other than those three parameters) only with a default Library View layout.