To assign WIN+D to show the desktop:
1) SUPER_L should be assigned by default in FC4
2) start "gconf-editor" from terminal
3) Choose /apps/metacity/global_keybidings/show_desktop
and enter "<mod4>D"
To assign WIN+L to lock the workstation:
1) SUPER_L should be assigned by default in FC4
2) start "gconf-editor" from terminal
4) Enter value "xscreensaver-command -lock"
5) Choose /apps/metacity/global_keybidings/run_command_2 (3,4...)
6) Enter value "
To assign WIN+R to run command:
1) SUPER_L should be assigned by default in FC4
4) Enter value "
5) Create a new file called "cmd" in /bin folder
6) Add following text to it
#!/bin/bash
/usr/bin/gnome-terminal
7) change the atrributes "chmod+x /bin/cmd"