If you can find any VNC viewer/client for Windows Mobile, then you can view/control your MacBook from your PDA, although it'd have to be via a network connection. I'm not familiar with Windows Mobile so I can't guide you any better than a Google search could (although if you find a VNC viewer/client I can help you configure your MacBook).
You may also be able to use a program like LogMeIn
(over the Internet), I frankly don't know. Somebody with more experience should chime in here.
If you need to use Bluetooth, there are also remote-control tools like Salling Clicker
, except Salling Clicker doesn't display your desktop, but it may be useful depending on what you want to do remotely.
Edited by macmaxbh, 19 December 2008 - 02:18 PM.