[sigonasr2]

Hello there, our team has been able to successfully set up our Classmate with the additional 5 GB of space.

I will explain the procedure in a little more detail:

AUTOINSTALL.CMD
DISKPARTSCRIPT.TXT
HIDESYSTEM.TXT

As you probably have already done so, these three files from the zip file must be placed on the desktop, or someplace accessible.

Now, plug in your restoration key files that you got from this year:
Change the current AUTOINSTALL.CMD filename to AUTOINSTALL.CMD.BAK
Change the current DISKPARTSCRIPT.CMD filename to DISKPARTSCRIPT.CMD.BAK

If you are having trouble on this part, you know you right-click files to rename them by choosing the 'Rename' option. The reason you'd want to do that is just in case something goes wrong, you can later rename those back to the defaults and restore the system.

Once you have renamed these files in the restoration key, drag the three files that were on your desktop into the restoration key. If you did the renaming, then it will not ask if you would like to overwrite the files. Once you are done with that, reinstall the system to your Classmate.

However, I bet there was something else wrong with the renaming process. Did you make sure you had the file extensions showing? You could have just renamed them without realizing that you did not change the extension. Make sure you try this process and see if you actually changed the file extensions and not just the filenames:
Step 1) Open up My Computer
Step 2) Click Tools -> Folder Options in the Menu Bar
Step 3) Choose the View tab and make sure "Hide extensions for known file types" is unchecked.
Hopefully you will be able to rename the files and reinstall it with success. If not, could you elaborate some more on what is happening?