Need direction on XML feed project?

[Mike W]

I've been given a project at work that I have no clue about and am trying to pick up pieces together from online searching and self teaching. I need to create a Web Service which accepts an XML feed from COntinental.com. I will need to Parse the XML data and using the RecordLocatorNumber, look up the customer's email address from our internal database. Then, an automatic email will be sent to the customer for check-in based off this email address including an embedded URL provided by Continental with the RecordLocatorNum added as a parameter in the URL.

Do I use ASP.Net to make this ALL happen? How does the server know to run this program? How do I set this Web Service up? I think I set up the SMTP server. How do I call our database for the emial address? I guess I am missing how to pull this all together. I can probably "put together" the ASP.net doc needed... but, I am pretty lost and any help would be great! THANKS!!!