Issue:
Cannot spell check in English in Outlook Express. Only the French dictionary is available.

Solution:
There is no known current solution.

Work Around:
We've seen this on machines which have MS Office 2007 Student Teacher Editions installed. There is no current Microsoft solution; however, you can download an alternate spell checking program here: http://www.snapfiles.com/php/download.php?id=105785&a=7116642&tag=609436&loc=2

This solution appears to seemlessly address the issue from a user perspective.