Not sure how the permissions work in command, or if you can even get into it, it's a crock of shit!
If you can, get on 7 or less and run the command prompt manually:
Start, run, type: cmd (you might need to search for it in the start menu, right click, run as admin).
Once it's run, you can navigate to your directory using cd, so:
Type cd c:\users\bleh\documents\map dir\
It'll go into whatever folder you point it to (the one with the me7 exe). Type the name of the exe into it to get it to run, and provide whatever extras it wants.
Sounds like you're on the right track!
It's hard to explain on this, sorry!
