Fax Error: The Message Could Not Be Sent. The Media Is Write Protected

After composing a fax in Word 2003 and selecting "fax" in printing options the fax composing screen comes up where I enter the fax phone number and choose cover page. After completing the information and I click "send" I get the message:"fax error: the message could not be sent. the media is write protected". I have checked the files and they do not show write protection.I have 2 identical Toshiba Satellite L455's- the only difference is that this one is 64bit and the other is 32bit.On the 32bit machine, using Word 2003, I am able to send the fax created on the 64bit machine without getting the error message.How do I correct the incorrect write protection message?