[bold]How to setup GMail with Thunderbird[/bold] http://mail.google.com/support/bin/answer.py?answer=38343 [bold]How to setup Yahoo with Thunderbird[/bold] http://opensourcearticles.com/thunderbird_15/english/part_10 or you can get [bold]WebMail[/bold] extension that can be plugged into Thunderbird. http://webmail.mozdev.org/
I don't think you can set hotmail up with anything but windows live desktop...i've tried serveral times but no luck