Yettwasezmel 3 ɣef 5 n yetran

sɛur mi_ve di April 24, 2009 · aseɣwen yezgan

Here is a different extension that changes the reply quote format:
http://nic-nac-project.de/~kaosmos/changequote-en.html

It suits my needs better. One bad point of that one though: you can't customise the date format as detailed as in the current extension.