ASP supports email through it's built in object, CDONTS --
but I would suggest a free downloadable component called PERSITS, and you can get that from
--
I'm guessing that you are storing all job positions in a database, and so whenever someone posts that they want a job, you would just run a SQL query on the database, pull out the id of any record that matches the criteria, and then (using an email component), generate the email.
aspemail is very easily configured, and comes with all the documentation you could ever want. It supports html email as well as plain text, embedded sound, and even attachments.
If you look at the component and read the directions, I'm sure it will be readily apparent how to make this work. If you have troubles, post back, with specifics, and we'll work them out.
good luck!

Paul Prewett