I installed the zip, but am still having the same problem. If I export to Excel using Excel TSV (UTF16LE-BOM), the date is exported in a different format, that does not contain a comma (e.g., "2/5/2011 11:27:00 PM"). Exporting this way works OK... Net, evidentally the problem only occurs when the exported date contains a comma...
I think this comma problem is related to the 'bogus' Submitted heading I described earlier (my Question #2).
RE my Question #1. Would it be feasible to add a 'time offset' option to the "Contact Form to DB Extension Settings" so that when displaying / exporting the "Submitted" time, it can be 'adjusted' for the desired timezone? I use a guestbook plugin (DMSGuestbook) and that how he makes it possible 'adjust' the time on guestbook submissions, for the local time zone. In my case, I'm UTC -5 hours.