quick resubmission of nodes of a specific content type

I have 800+ nodes of a certain cck node type that I would like to resubmit to take advantage of new code I've placed in the node_submit function of that type.

Is there a quick, but not so dirty way to do it, like just one function call, it would suck to have to go through the series of nodes are resubmit each one.
I'm not sure if un-publishing and then re-publishing would actually call the node_submit function.