Depends which DE/WM you are using.
For KDE things can be run at startup by adding a script into the ~/.kde/Autostart/
My Superkaramba script is as follows:
Code:
THEMEPATH=/home/ethics/.kde/share/apps/superkaramba/themes
superkaramba $THEMEPATH/VersuriStyle/VersuriStyle.theme &
Obviously you need to change the path and the style you want, but just save that as superkaramba.sh, drop it into the ~/.kde/Autostart directory and make it executable with
Code:
chmod +x superkaramba.sh