Help with app

[btwint]

First, great site. Tons of information.

I would like to make an app that is basically controlled by excel type formulas or calculations. I need the user to input certain info and the worksheet does the calculation and gives a total. I do not want this to look like a spreadsheet but something like a nice background image with txt boxes to type info in. I know this sounds real basic but is this going to be to complex that a newbie like myself could not do it. I really dont even want it to be on the market or anything. I just need it to calculate and have to ability to enter customer type info and when done email the page. Some let me know if this sounds crazy for my first app.

Thanks,
Chris