To change the wallpaper:

1. From the home screen press Menu -> Basic -> Display -> Wallpaper.
2. Press the left or right arrow key to select the desired wallpaper image.
3. Press the Save soft key to accept the change or the Back soft key to cancel.

For changing your ringtone:

1. Press Menu -> Basic -> Sound -> Ring Tones.
2. If you have more than one line that rings on your office phone, you can select a particular line and set individual ring tones for each.
3. Press the up or down arrow key to select the desired ring tone.
4. Press the Save soft key to accept the change or the Back soft key to cancel.