When I enter my yahoo account to set it up, the dialog box says my user name or password is invalid, which it is not. It says "configuration could not be verified-is username or password wrong". I selected pop as incoming and smtp as outgoing. I have no e mail program installed on my computer as a default, which is why I need Thunderbird. Thunderbird also asks "in order to receive messages I have to first set up an account- the only option given is newsgroups. I have been trying to fix this for the past three hours. What am I doing wrong? I have Window 7 64 bit. I need to install a default e mail program on my computer as soon as possible. Thanks for your help. Barry B barryb1717@yahoo.com