How to start KDE CVS version from KDM?

[Michael Thaler <michael.thaler@ph.tum.de>]

Hello,

I compiled KDE from CVS and installed it to /opt/kde. I created a user 
kde-devel and I put the following in .bashrc and .bash_profile of this user:

KDEDIR=/opt/kde
KDEHOME=/home/kde-devel/.kde-unstable
PATH=$PATH:$KDEDIR/bin
LD_LIBRARY_PATH=$KDEDIR/lib
export KDEDIR KDEHOME PATH LD_LIBRARY_PATH

The .xinitrc looks the following:
WINDOWMANAGER="startkde"
exec $WINDOWMANAGER

If I log in as user kde-devel on tty1 and use startx, I can start the KDE 
version from CVS. However, if I try to login as user kde-devel from KDM, 
KDE3.3 is started. What do I have to do to be able to login from KDM as user 
kde-devel and start the KDE CVS version of KDE?

Thanks in advance,
Michael