Assigning a caller ID ringtone
1.Press Phone/Send 
.
2.Select the favorite you want to give a ringtone.
3.Open the menus 
.
4.Select Edit Favorites on the Record menu.
5.Select the Ringtone pick list and select a tone for this contact entry.
6.Select OK.
Selecting wallpaper for the Phone application
If you have images stored on your Treo, you can select different wallpaper for the Main View in the Phone application.
1.Press Phone/Send 
.
2.Open the menus 
.
3.Select Options, and then select General Preferences.
4.Select the pick list at the top of the screen and select Show Wallpaper.
5.Select the thumbnail image and select a wallpaper image for your Phone application.
6.Select OK.
If you prefer to use the onscreen Dial Pad, assign the Dial Pad as the default wallpaper.
If you remove the Dial Pad as the wallpaper, you can still access it quickly. Press Phone, and then press Center. Dial Pad is always the first selection in your redial list.
You can also set the background for the Calendar’s Agenda View. See “Customizing display options for your calendar” on page 109 for details.