Hi there; this problem started about a week ago. Don't know what changes were made. My windows XP fax program won't send any more. It receives dozens of faxes a day, but does not send. I compose my fax, go through the steps, can preview it. Then I click on send. And... nothing happens. It's not even in the outbox. Crazy! I even uninstalled the driver, had windows reinstall it. Nothing still. I am in a good mood to replace the fax program with a different program (not the built-in function from Microsoft). Hopefully someone has an answer.