Hi Francois,
It's funny to see that the wallpapers would need kde4. In my opinion, the trinity packages shouldn't have the PCLOS wallpapers as a dependency too. I'll check if I can force the removal of the wallpaper package and then if I can remove KDE4, but at the same time, it can be useful to have the base packages of KDE4 if I want to add KDE4 apps later, so I'll think about it!
For the login, I found out that I could write the text in the login manager page in the TDE control center...
I have installed qtcurve theme for qtk2, qt3 and qt4. Since I have some apps written in qt3 (as QCad and TDE) and some that looks like qt3 apps (as DraftSight) but is made in fact in qt4 and pure qt4 apps (as VLC media player and Clementine). Now, I have 2 or more qtconfig. PCLOS has one QT3 and one QT4, DraftSight seems to have a QT3 (probably that it isn't completely ported to qt4) In some qtconfig, I don't see my qtcurve theme but I see support for GTK theme, which is QTCurve, so I ended up having QTCurve in every apps.
Thank you!
-Alexandre