Perhaps you signed up for the Intel Software Network using your email address as your login ID, then realized after posting to the forums that your email address is publicly displayed. Here is how you can change your Display Name in the forums:
1) Log into the forums.
2) Click Preferences.
3) Click Site Options.
4) Make sure "Enable DisplayName" is set to Yes. Save changes.
5) Click theAbout tab.
6) Enter your desired display name into the "Name" field. Save changes.
This will update your forum display name in both past and future posts.
Note that even if you change your Display Name, your Login ID does not change. Also note that changing your Intel Software Network Login ID does not automatically update your Display Name.