Hi!

On the dev mailling list, Darrel Anderson wrote that he wanted a way to display a message just one time after the installation.
Here is how it is made in my PCLinuxOS remaster (and the original too):
A little script is placed in the Autostart folder of the users when users are created (/etc/skel is the default base user profile)
It shows a little Zenity dialog and launch a web page.
Once it is executed, the little script is auto-destroyed.

As an attachement, I included the script. For more details of how it works, you can install my PCLinuxOS noin-official TDE remaster (in the LiveCD page of this website) and you'll be able to see it when a user log in for the first time.
Of course, Zenity (GTK2) could be replaced by a TDE equivalent.

Have a nice day!
-Alexnadre