I ran Doug Knox's file to restore EML defaults and OE still won't open it.
OC
Outlook Express.
Right click an .eml file and select Open With, browse to Outlook Express
if not listed.
Make sure that you check: Always use this program to open these files.
Always use this program to open these files
[[Specifies that the next time you open this file, or any other file
having
the same file name extension, you want Windows to use the program that
you specify here.]]
Or go here...
Windows® XP File Association Fixes
Copyright 2003 - Doug Knox
http://www.dougknox.com/xp/file_assoc.htm
Read the instructions. Then get...
EML File Association Fix (Restores defaults for EML files)