Access website for Excel file, convert to CSV

I have a login to a website. After I login, I click a link that takes me to a page with a .cfm extension (Cold Fusion?). On this page there are a number of Excel (.xls) files. I manually select a particular file, save it on my PC, open it in Microsoft Excel and then save the first tab of the worksheet as a .CSV (comma separated flat file). I need a program that will do all this automatically (programmatically). This program will reside as a cron job on a Linux box. It will go to the website, programmatically login and see if a new Excel file has been posted for the day (file name will be <something><MMDDYYYY>.xls). If not, exit. If yes, then get the file and save all the columns of the first tab in the worksheet as a comma separated flat file (.CSV file). ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform Linux