i also have the same problem, how exactly would you make the required changes to the customize.xml file.
i found the following section, this is as much as i can find about the custom buttons on vodafone phones in a vodafone cda i downloaded.
Code:
<activity-menu>
<activity-menu-present>true</activity-menu-present>
<activity-menu-neweventstyle>true</activity-menu-neweventstyle>
<activity-menu-horizontalorientation>true</activity-menu-horizontalorientation>
<action-button-activates>true</action-button-activates>
<activity-menu-focusoperatortab>true</activity-menu-focusoperatortab>
</activity-menu>
- <shortcuts>
- <rocker-key>
<up lock="false">JumpPage</up>
<down lock="false">Phonebook</down>
<left lock="false">Msg_WriteNew</left>
<right lock="false">FileManager</right>
</rocker-key>
this dosen't refer to the correct buttons.