I have been running Outlook 2003 using Word 2003 as my email editor for many years. I have just installed Office 2010 Home and Student edition which does not include Outlook 2010. I have left Word 2003 [as part of Office 2003 professional edition] on my computer. When I start to compose a new email, I get the error message "microsoft word is set to be your e-mail editor. However, Word is unavailable, not installed or is not the same version as outlook. The outlook email editor will be used instead". I have reset the email format in tools-options-mail format to "use word 2003 as the email editor" but to no avail. I need to use Word as my email editor for autocorrect options, signatures, etc. I have spoken to Microsoft support and they cannot offer a solution other than to buy Outlook 2010. I surely cannot be the only person who has experienced this problem.
The only reason I wanted to install Office 2010 was to be able to read the increasing number of attachments I receive in docx or xlsx format and to save the bother of converting them everytime. Otherwise, I am completely happy with Office 2003 apart from now having wasted the money on a 3 licence version of Office 2010.
A simple uninstall of Office 2010 still left me with the same problem. I have restored my computer to the point prior to installing Office 2010 and Outlook is now working fine. The only action I haven't yet tried is to uninstall Office 2003, then install Office 2010 and thenre-install Office 2003.....which I am loathe to do because of all the updates required. Does anyone have any ideas?