Tearinghair:
If emails are opening automartically, when you open them in Outlook Express, you must have the preview pane activated. (Very silly!). Go to View > Layout. Click to remove the tick alongside 'Show preview pane'. Click 'Apply' and 'OK'
You can now highlight an email, and then delete it, without opening it. If you want to see what's inside it, but still without opening anything nasty contained in it, right-click on the header and select 'Properties', 'Details' and 'Message Source'.
Chris