I created an Excel program that allows me to copy and paste a large amount of raw data into a worksheet, run a macro, have information added to blank columns based on information in columns with data, delete rows with certain data, etc. I am wondering whether I can create a website that I can paste large raw data downloads into and have it perform the same steps. Can you give me advice on where to begin? i.e. what type of program should I use to accomplish what I am trying to do, etc?