Not sure if you are still interersted but it is fairly simple to get the
[Please Register or Login to download file] working.
All you have to do is unzip the tutorialxxxx.zip for your language - located in "content/tutorial". if you dont have that folder download the above Password : downunder
Once you unzipped your language tutorial you will find a folder "tutorial" and the file "content.ngg".
Go into the folder "tutorial" and rename the folder 480_272 to the resolution you use on your device.
After that go into that folder and open the file "content.ini" with Notepad++
Use the search and replace funtion to change all the 480_272 with your screen resolution.
Save the file.
Use Winzip to pack all files and folders back into a zip file with the same name as the original - replace on your device and enjoy the tutorial under "help".
In case our Nabi thinks that is too handy to miss out on I might be willing to adjust the english tutorial to some of the most common screen resolutions and upload them.