Red X vs Email Graphics

Appreciate some assistance.

Lately, every time I send or forward an e-mail that contains any kind of graphic, what appears in the Sent box is a message with no graphics, but instead the outline of some shape of a box with a small white area containing a red X in it. No graphics appear. The recipient gets the same thing.

Running W98Se, IE and OE 6.0. Have not installed any new programs.

Any ideas of what to do to correct this so that messages retain their graphics?

 

Take a look at http://support.microsoft.com/default.aspx?scid=kb;en-us;171908 and http://support.microsoft.com/default.aspx?scid=kb;en-us;246186