Dates and times in Icedove

[Ken Heard <ken@heard.name>]

All the dates of e-mails in Icedove are backwards at least in my boxes, 
i.e., day-month-year, instead of year-month-day.  Likewise, the times 
are in 12 hour notation, followed by AM or PM.

My locale preferences in KDE are set as year-month-day and 24 hour time 
and date formats.  Apparently these settings apply only to KDE 
applications, not user-wide.

Is there a way to set date and formats user-wide, even system-wide? 
Otherwise, is there an extension to Icedove to set those formats for 
Icedove?  I googled the Mozilla website to find such an extension using 
time and date as search words, but was unsuccessful.

				Ken Heard