To answer your first question, yes you can update the startup.exe via ftp, but first
you have to rename the existing startup.exe something else; you can't directly overwrite
it or delete it. After renaming, ftp in the new file, optionally delete the old, renamed one,
and reboot.
Some articles on remote panels:
http://zone.ni.com/devzone/cda/tut/p/id/4791
http://zone.ni.com/devzone/cda/tut/p/id/5154
http://zone.ni.com/devzone/cda/tut/p/id/5154
Also be careful about exposing the Fieldpoint node to the open internet; I don't think
it is appropriately hardened for direct internet access.
Matt