Hi Mary,
Instead of a link, why not just use a template.xml with a default parameter containing the location of the non-centralized location?
Alternatively, if you didn't want to sully your main DOM, you could do some fancy xdlaunch with /aggregate option and pass in a form with the parameter in a separate form that is imported at load and you write some OnMergeRequest that pilfers the param and quits the merge.... cool hack eh?
Patrick Halstead [InfoPath MVP]
InfoPathDev
Patrick Halstead
Project Manager at Qdabra