You want that in your user's account.
How do you start up your gui? If you use startx, it's simple. Make a file in your home directory,
.xinitrc and put something like this in it
Code:
# fancypiper box user phil .xinitrc file
exec xscreensaver &
exec kde
xhost +local:
#exec gnome-session
#exec gkrellm -w &
#exec fluxbox
You can do that with the file your login looks at if you use a gui login
man xdm
man gdm
man kdm
Read for the login manager you use.