Software :: Program That Can Send Faxes To Another Fax Machine?

we're throwing away a fax machine we have been using for a while but now we want to know if we can use the computer to send faxes over an internet connection of a telephone connection (it doesn't matter we're willing to hook them up to both) is there freeware that can send like an openoffice text document to a fax machine or a pdf. and is there a way to recieve faxes by having the computer recieve them and making the printer print it