Calculator Program from Excel Spreadsheet

I have a spreadsheet that is a calculator for a product we sell.? I want to turn it into an executable program just to make it more user friendly for customers.? I think this would be a simple project, but I am not sure how to go about doing it. ## Deliverables When opening the program, we would like a disclaimer with the following message that they have to agree to to run the program.? If they decline, then the program shuts down.? The disclaimer reads "The information in this Rotor Space-Out Calculator was prepared carefully and is presented in good faith for use by National Oilwell Customers.? Every attempt has been made to make this calculator as accurate as possible, but it is only a guide.? Depending on the age and operating condition of equipment, the calculations used within the calculator may vary from the actual results.? All calculations within in the calculator are theoretical and have been based on new or like new equipment.? For more detailed information or specifics please contact your local National Oilwell Varco representative." There also needs to be a password for Engineering & Design employees to override the Friction Drop field.? Currently it is set to welcome, but maybe something like "friction" would be more appropriate.? The rest I believe the spreadsheet itself is self-explanatory.? I have included the spreadsheet as an attachment, along with a very similar program that I is close to what I am shooting for.? Thanks for your help.