Thank you for all of the responses. It looks like Efax requires a phone line and modem, all my internet is broadband. I used to work in an office where you could send an email, but instead of entering an email address, you could type in a fax number, and it would send it to a persons fax. Also, the incoming faxes were automatically turned into PDF files that came into my email.
Does anyone know what program that might have been?