Hi Mike,
The only program I know that works on WM2003 is Tweaks2k2 0.9 - it is fully compatible with 2003. Someone told me that he's successfully adjusted the orientation of the screen to landscape mode.
You need to do a soft reset before it is done and remember to turn off any password protection from the device because some of the numbers are not visible and you'll end up doing a hard-reset...
This is the link to the software --
http://www.pc-counselor.8m.com/index.html
You can run this software 3 times only in the trial version so don't mess with it too much.
I'm still looking for another program doing the exact thing for WM2003.