How can I add a Syncronisation Item?

I have setup a notebook to synchronize some network files. If I click
Start > Programs > Accessories > Synchronize, a dialog appears with two
groups. One is offline files with the two server share locations
listed, the other group is Offline Web pages with My Current home page.
I want to be able to add more groups.

As an example I might want a script or application to perform
specialist file transferrs, start file processing on a server etc.

Why do I want to do this? To make life easier for the user: At the
moment when they come back into to office they need to synchronize
outlook, our FileMaker database, Network Files and in the future
electronic forms. I would like everything to be simply included in the
synchronization dialog, requiring the user to simply click Synchronize.

I'm not exactly sure how the windows synchronization system works, I
had a quick look through the registry but couldn't find anything
obvious.

Any help would be very much appreciated.