open OE and go to tools/options/security and tick the boxes that say:
do not allow attachments to be saved or opened that could potentially be a virus.
warn me if other applications try to send mail as me.
then click on the read tab and tick the box that say`s:
read all messages in plain text.
then click apply and ok.
now click on the view tab and then on layout and untick the box that says:
show preview pane.
note:to view an attachment now you must undo the above.