I copied Notepad from C:\Windows\system32\notepad.exe to my desktop and it won't launch from the new location. It launches just fine from the Start Menu (that points to the original location). I also tried taking the copy from C:\Windows\notepad.exe but that won't launch, either.
I'd think that something as simple as Notepad would launch wherever it's sitting. For what it's worth, there are two user profiles on here and I have the UAC turned all the way down.
I'm doing this because the other user plans to install Notepad++, which will overwrite Notepad, and I'd really like to hold on to it.