The reason you can't do anything with the files is because your cube has the files open. Download and install task manager -
http://www.freewareppc.com/utilities/taskmanager.shtml. Then you can kill the following tasks:
Biotouch.exe
APLauncher.exe
APLauncher2.exe (you may not have this one)
QuickDial.exe
MediaHubMini.exe
You'll then be able to change those files.