Trying to set @mac @me account

Hi there, recently my brothers computer drive failed so I offered to fix it up. He didn't have things backed up but I was able to get his data safely off onto a external drive. I reinstalled mountain lion, updated everything and started transferring all his data over. However I am having trouble with mail. I copied and replaced the files in library/mail and library/application support/mail. However I can't seem to get the addresses working. @mac & @me. I tried deleting the accounts and readding them within mail which I would have thought would automatically configure the servers but no luck. He gave me his password so I know I'm doing that right. The incoming server has no info and I done know how I can edit that. Any thoughts on this problem. Thanks