This is done through the Palm Desktop software. To change the username do the following:
- Open up Palm desktop from your desktop or through your start menu.
- Go to the Tools menu on top and select Users.
- This will display a box with all of the current users syncing with this desktop.
- Highlight the username that you want to change and select Rename.
- Type in the new name and selct OK.
- Perform a Hotsync to verify the Handheld now has the new Username.