Darn it! I've had this running notepad that I've been keeping on your problem. I haven't posted because I figured you had abandoned this post. Been watching to see if you'd return to the board but haven't seen hide nor hair of ya'. Looks like you came and went while I was sleeping. I guess I will tack up what I got so far the hopes that you will return yet again, so tag your it!
This sure is an aggravating problem to research. While the net is full of this kind of problem, the solutions seem to be the same and either they worked or the poster never returns, for a comment or update, after stating the fixes suggested didn't help or to share the fix once they've found it. The most common solutions found have already been suggested to you and as you reported have not helped. I hope you will keep this post updated with your progress and share the fix when found. That said see the below......
1] To start with, I suggest if you have not done this recently now would be a good time. I don't know know how far and to what extreme you will go to fix your current problem so a backup is recommended.
How to manage, backup and restore .pst files in Outlook 2007, in Outlook 2003, and in Outlook 2002 http://support.microsoft.com/default...B;EN-US;287070
2] Did you know about this and have you used it in the past:
Description and use of the Save My Settings Wizard http://support.microsoft.com/kb/826809
If you have used this in the past and have this type of restore available I give it a go. But for heavens sake, if this is new to you, now is certainly not the time to use it. Why save settings when they're messed up? On second thought..... a backup now would allow you to at least restore it to the point you have it now.
3] That said here is a hodge-podge of stuff I've been collecting. Try what you wish at your own risk. You can't break whats already broken. Keep notes on changes you've made so you can reverse them should they prove useless or have no effect.
5] In outlook 2003 new message window, hit F7. this will bring up the spelling and Grammer option (also available through tools menu item). Press the options button and see if the required options are selected. if not selected, select Check Spelling As you Type.
6] Open a new message and type an incorrect word. Did it autocorrect? By what you mentioned it will not underline in red. Can you see the list of probable words when you right click on the word? See if the same issue applies when you change the format with word. RTF/HTML/PLAIN TEXT.
7] In Outlook, try to click on "Help" select "About"
Click on "Disabled Items"
See if you spell check is listed there.
8] Or, also in Outlook, try to click on "Tools", "Options".
Then click on the "Mail Format" tab.
Change the value next to "Use Microsoft Word to edit e-mail messages...."
Apply the changes.
9] There is an option to "Use MS
Word as email editor" under Tools\Mail Format
This allows you to use spellcheck, thesaurus, grammer check, etc.
10] A look see http://126.96.36.199/search?q=cache:...=us&lr=lang_en
11] You may wish to try uninstalling and reinstalling the Proofing Tools of Office. See if there is an option to remove the proofing tools of office and after removal and fresh reboot add or reinstall them again. You'll need the office cd to do this.
12] Perhaps a new profile: http://www.experts-exchange.com/Soft..._22925068.html
13] HKEY_CURRENT_USER\Software\Microsoft\Office\10.0\Outlook\Options\Spelling This is the registry key where a clue may be offered. It is worth a look see to see what is enabled and what is disabled. Just don't make any changes unless you export this whole hkey for a method to restore the the thing.
This is what I have so far. I will continue to hunt and peck on this as time permits. I sure hope something above will work though.