if you mean
"I gather I can load web pages. Can I export a Processing app to a web page, then load that page into the sever to get something intelligent running?"
this is not an xport question, this is a java/processing question. in theory, any java app will run. however processing is (from what i have heard) rather bulky and may not fit into the xport space provided, without some effort.
and
"And would such an app be able to talk to the Xport's serial port (and thus, to the Arduino?) Or is there an easier way of providing some automation?"
this is answered here:
http://ltxfaq.custhelp.com/cgi-bin/ltxfaq.cfg/php/enduser/std_adp.php?p_faqid=943
which has step-by-step examples on how to use java to talk to the serial port
what im confused by is
"I decided that if the Xport folks don't care enough to document their chip, I don't care enough to waste any of my time or money on that flaky outfit's products. Life is too short."
are you saying you are looking for a step-by-step on how to install processing on an xport to communicate with an arduino? what documentation, specifically, are you missing?