okay so i've seen people can landscape text but its kinda complicated how they explain so i will teach all you how to do it step by step so you'll not be so confused.. and you can flip anything once you figure this out
1. go get PHM reg edit
http://www.phm.lu/products/PocketPC/RegEdit/
2. after you install it on your phone load it up and go here
HKEY_LOCAL_MACHINE/System/GDI/Rotation
you will see HideOrientationUI click it you will see
Value data: 1
there is an down arrow press it once to make it go to 0
after wards hit OK.
3. at the left top of the screen there is a Start button click that
go to Settings in this screen click "Buttons"
you will see 1. Select a button: and 2. Assign a program
click the drop down look for this "<Rotate Screen>" yes its in arrows.
after that hit "ok" at the top right go to your texts and test it out to see if it worked press the very left bottom key on the phone its the answer button you have to hold it for 2-3 seconds and it should flip, if you want to return to normal mode just hold it again
this works for everything on the diamond it works for tomtom and all the other programs anyways good luck i hope it worked for you if not ill try to help you out.
edit: on the main screen if you do this it kinda glitches out but it can go back to normal if you hold the button..