Thanks for your help. I can check special numbers, however the dropdown for the Fields section is disabled, it won't display the field names.
That said, after import, I noticed that now the date field is right aligned (it was left aligned before). So I can simply highlight the date column and change it to dd Mmm yy format, which is what I wanted.
Also, now dates tha were previously going from "2014-09-04" to the "9th Apr 14" are going to ..
4 Sep 14, and the other dates all look correct. So, despite the problem that I can't view the Field names, by making sure that the "Detect Special Numbers is checked", has fixed the problem.