Character Set Difficulty

[timothy parkinson <t@xxxxxxxxxxxxxxxxxxxx>]

Hello,

I have an issue where mails coming to me display certain characters as the "?"
character instead.  Apostrophe's "'" and dashes "-" seem to be the most common
characters affected.

I'm pretty sure it relates to the character set that the mail is in, as
evidenced by the Content-Type header:

  Content-Type: text/plain; charset="iso-8859-1"

If I open the file containing the mail in vim - it displays the characters as
codes like "=B4" and "=96".

Could somebody possibly point me in the right direction to fix this?  Much
thanks in advance...

Tim