Custom Dictionary for spell-check

[nilkanth]

I have installed Windows XP SP 2 with all the latest updates, Internet Explorer 7 and Office 2007 by unattended cd.

I can check spelling in US English dictonery in word documents in MS office 2007, while when I am checking checking spellings in Outlook Express it checks in French dictionary.

I want to use only US-English Dictionary both in Office 2007 & Outlook Express 6, How can I change the French Dictionery of Outlook Express 6 to US-English Dictionery?

Please guide me.

Thanks

Nilkanth Patel