Hi all,
after stepping through the very interesting tutorial of the CGUITextBoxclass, I took the code presented there and created my own CGUIexScrollWindow. This one got less functions than CGUITextBox, but might do for some tasks aswell. And, as with TextBox, there is no need to fiddle with the engine source. Tested with current Irrlicht release (0.14.0).
A small tutorial what I did and the source can be found here (bare with me; first time me trying to contribute to the Irrlicht community):
http://www.computer.mikoweb.de/irrlicht1.php
Cheers,
miko
HowTo: Add a ScrollWindow class to your project
Nice work, looks somehow a bit cleaner then my version 
YASS - Yet another Space Shooter
under Devolpment, see http://yass-engine.de
under Devolpment, see http://yass-engine.de