autofinder

I need to have a program running every set interval (1-5) minutes to auto search ([login to view URL]) based on matching a search criteria (make, year, model, millage) The software should filter the new matches as they come. I need to have a program which alerts me once a car matching the search criteria is found using email or SMS as well as on the interface of the program where it is running. I prefer to have it as a web portal hosted somewhere and accessible from any where with a login. I am looking for something reliable NOT fancy, simple program which automates a manual search. While designing the solution, try to keep it as flexible as possible to include other sites for the same purpose.