The BREW thing is if you had mobile email notification setup on your previous feature phone.
See this thread for some additional information.
If you are still having difficulty adding your yahoo email account please remove the battery from your device for about 30 seconds then re-insert the battery, turn on your device and then follow these steps:
- Select Menu
- Select Mail
- Select the desired Email Account
- Enter your Email Address and Password. Make sure the Account name and Your name are correct.
- Select Make this my default mail account in order to enable/disable
- Select Finish Setup
Are you still having this issue setting up your Yahoo email? I see you were able to login to your Yahoo email on the computer. If the phone is still giving the same error, try clearing your cache. Settings>Applications>Manage Applications>All>Email>Clear data/cache.
For the Brew messages, that means you subscribed to Mobile Email on your last phone. The subscription never completely cancelled, so it is still trying to send you alerts thru SMS that you have a new message available. I have a tool available to remove these alerts. I will send you a PM requesting additional information so I can resolve this issue.