i have not been able to recieve any emails from yahoo. i have been trying to send emails from my pc to my mycingular.blackberry.net email and am not recieving them, but am recieving my gmail.

also my gmail says -1 emails, what does that mean?

For your gmail problem...pull the battery out for about 30 seconds and put it back in, you should get rid of the negative 1 indicator. It won't make you lose any data doing this.

As for the mail issues, I am not too sure what is going on there, but someone will be able to help you with it around here.