Is it possible to force refresh MCX settings?

So, I have thousands of laptops in the hands of students, all running Leopard and bound to AD and OD and doing the whole Golden Triangle thing. However, it's almost completely wireless, and due to some earlier issues with 802.1x wireless authentication, we set the laptops so that they would not connect to wireless at the login window. Now, however, it would be nice to push out MCX changes if, for example, we add a printer at a site, but because these don't really login outside of cached folders, I'm not sure how to do this. I have dug around a bit in the ManagedClient app, but so far haven't found anything. Basically, what I'm looking for is a way I can call (via launchd timed script,or pushed via ARD) some kind of 'MCX Refresher" that would update the MCX settings of the cached Mobile User, to be applied at the next login. Any ideas? Thanks in advance, Jeff