Well, I checked that but couldn't reach anything, I couldn't find where to include the required style.

This is what the system uses in its replies:

"04/02/2011 08:47 - Muhammad El-Sergani wrote:"

And I would like it to reply using the following header:

-------- Original Message --------
Subject: Re: Original TT
From: XXX <xxx@xyz.com>
To: YYY <yyy@abc.com>
CC: ZZZ <zzz@xyz.com>
Date: 17/3/2011 3:10 PM

Is that possible, or can you provide any means to do so?
That would be very much appreciated.