Hi Anthony, there isn't any way to do this in the current version, but I have added a switch to enable this in the next beta release which should be out probably later this week.

You'll have to edit the moi.ini file to set the switch, you can find moi.ini here:
C:\Documents and Settings\[ your login name ]\Application Data\Moi\moi.ini

It will be a new entry under the [View] section:

[View]
SwapPanRotateMouse=y

- Michael