But Francine, you said that you had an email account "already set up" - a Mac.com account. Is this the account you're trying to use? If you don't PAY for Mac.com, you don't HAVE a Mac.com account, and when Mail attempts to retrieve mail for you using this address, it doesn't work - no matter how many times or in what way you fill in the password. It uses both the user id and the pw to connect to the mac.com/me.com mail server and they have to belong to a real, working account. It's trying, but there is no account, so it re-prompts you for the PW, in case that's incorrect.
If you DO have a Mac.com/MobileMe account, please let us know. The settings for that are here:
http://support.apple.com/kb/HT2296 (You are
supposed to be able to use 10.3.9 for mail with MobileMe - though it doesn't appear that way in this set of instructions!)
Now, if it's some OTHER email account that you're trying to use, you have to set it all up, using your ISP's info/directions, not something you already have in there with mac.com info.
So what, exactly, are you attempting to do? What email addy, what ISP?
