It is particulary usefull, when the older DS 6.9 server is not answering any more correctly, because not able to change.
Also usefull when the old 6.9 down, and an old PC switch up later on...
The script should be installed in the machine login script.
Nice information Yannick, you can publish as a "Blog" because not a Forum question (as it is the solution!)
If you extend a litlle, explaining how to publish this script into the AD correctly to make this login script operating each PC the domain when computer boot, you can probably create a nice Article, instead of a simple Blog :)
Best regards.