A little script that would check the sync directory every 10 minutes or so (don't know how time critical your app needs to be) and compare the current time stamps and file list with a snapshot of the previous list would be easy enough, then depending on what files had changed could kickoff another script (or call a function or load a module or ....) that would do the specific processing you need. You can also use the Excel and Access applications (several Access DB readers available for cheap) to do DB type functions on the device. I realize this isn't Perlish but it does meet the laziness factor required by better Perl programmers.
