>Someone can tell me if is possible to automate windows xp fax services to send faxes and if so where to find documentation or examples about it ?
>

Take a look at
- HOW TO: Enable and Configure the Fax Service in Windows XP mskb #306550.
- http://msdn.microsoft.com/library/default.asp?url=/library/en-us/fax/faxportal_9nol.asp
- http://msdn.microsoft.com/library/default.asp?url=/library/en-us/fax/faxlegacyvb_4r6t.asp