You can download and install PHM Registry Editor on your phone to modify the registry.
Unlocking/Unhidding the extended_rom
then change the value (default at 1) to 0
Wait at least a minute before doing a soft reset.
Get rid of the voicemal icon on the '1' key (3.16+)
The 3.16 rom has added an voicemail icon to '1' key which also caused my skin to look messed up. You can disable it:
set the DWORD value
"EnableVoicemailIcon" = "0"
by default it is set to 1.