Change 'already added' user information in Sharepoint
Steve Savage - Sep 3, 2006
Rather than hacking the database, I think all you need to do is modify the user information for a particular site. Just go Site Settings—->Edit User Information Find the user and modify the name and email address, or delete it at your option.
Moreover, modifying the SQL databases directly (by using SQL Manager/SQL Query) is not supported by Microsoft
I have gone “Site Settings—->Edit User Information” but Email field and any field disappear to Edit. please help me! thank you.
Use SSP in WSS 3.0. There is a users and profiles selection. Once in the website, select to View Profiles. Select any profile, and change any or all information.