I got to thinking and figured out a way to have the probe distribute the script(s).
I created a new package like this:
Name: bb_od_test_nexec
Group: OnDemand
First tab
Name: bb_od_test_exec
Files: dir-c.bat
Probe definitions:
Name: ~bb_od_test_nexec
Group: OnDemand
Type: on_demand
: blank
Dependencies:
Name: nexec
Second tab
Name: nexec
Configuration of existing probe: checked
When I did this and dropped the package on a computer, the dir-c.bat file was located under c:\program files (x86)\nimbus\probes\ondemand\bb_od_test_nexec.
I verified that the file contents matched the original file I created, but I haven't yet tried to call the file from nexec.
Good luck,
Chris