Screen Scraping Program for Bookie Odds

I want a program that will automatically scrape a website screen in regular intervals and report to me by email or SMS text when certain conditions are found. The screen I want to analyse is from the website [login to view URL] I wish to look at some of the screens that are available after [login to view URL] is accessed from the home screen. This is accessed by clicking on 'horse racing' on the left hand side. The address of the lower screens available from this second screen will change from day to day but there is a finite number of different screens available which I can supply at a later date. 2 examples of of the lower screens accesible from the second screen are: [login to view URL] [login to view URL] These screens are accessed on the website by clicking the relevant race meetings on the left hand side, ie. Musselburgh and Brighton in the 2 examples above. Once these screens are accessed, I wish to search for a percentage figure which will be available for each race in the particular meeting in a certain position. ie. Best Book: 103% The purpose for this search is to find all of the races at each race meeting where the percentage figure is less than 103% ie. 102% and below. These percentages change throughout the day as odds on different horses in each race change. I wish to be notified of all successful results each time the program runs either by email or SMS messaging (or even better if I could select either email/SMS/or both). I will need the following information: Race Meeting Race Time Percentage found Number of runners (this is found in the previous line next to Non-Runners ie. 'Non-Runners None (All 4 Run)' I will also want to start and stop the program somehow, perhaps by an App on my Iphone or Android phone or perhaps using another method that you can suggest. I am flexible on this last part of my request as it may not be that simple therefore I could work some method out for myself to stop and start it if necessary. I would also like to have the source code for the project and a brief explanation of how the program works so that I may amend it myself from time to time if things in the Oddschecker website change. (A very brief explanation will do as I am a computer programmer and do understand the fundamentals of programming anyway). I can supply any more information tho this request if required.