I have developed a customised application that handles order entry, inventory, invoicing and purchasing.

My client has a new requirement. My client would like to fax the invoice generated in the Invoicing module directly to their customers according to the fax number stored in the customer master file.

Does anybody has any idea how do I go about doing this? Has anybody done some program similar to this?
Can I integrate with Winfax program?

Please help.

Thanks in advance.