Nigel Garrett could not archive some of his old e-mails on outlook 2003 for some reason. When he decided to archive all the emails before a particular date like 28/05/06 it meant all the emails before that date should have gone into a archive folder onto a network drive specified by him. There were a couple of odd emails which did not seem to getting archived and remained in his inbox.
I went through all his standard settings in first place and when nothing seemed to be working patched his ofiice professional 2003. the problem still did not resolve. Then on refering to some articles over microsoft technet I manged to find the way archive worked in outloook 2003. it explained that archiving doesn't only take into consideration the date email was sent ( that is what all of us see on last column of the outlook) but also the modified date (open the email and check under properties). On looking at the emails which were not getting archived on Nigel's machine the modification dates were different from the sent dates.
The only way to arcvive these emails was to drag and drop them.