AUTO SAVING DOC + EMAIL BACKUP

Hi, I have on my computer an excel file that I enter in my daily sales and expenses for my small business. I don't want to ever loose this file. I need a application that will automatically load on each windows boot, while its perminatley running, I want it to create a copy of this file that I allocate, and to email it to my company gmail email address. The app needs an area for me to locate the file of choice, and the email to send it to and a time to do it, and also an option to choice how often IE daily, every 3 days, 5 days etc.