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.