The following steps will walk you through removing an account from Outlook 2007.
In your Outlook Toolbar, click Tools and select Account Settings from the menu:
You will then see your Account Settings dialog box. Make sure that you are on the E-mail tab. On this tab, you will select the account you wish to remove. After selecting the account, you will select the Remove option to remove the account.
After selecting Remove, you will be prompted to verify your intent to remove the account. Select Yes to complete the removal of the account.
To add a Redtail-hosted account in Outlook 2007, click here.