php script for form handling

I need a script to do the following: Have an HTML webpage that takes form input (a few list box selections and a few input fields) Saves it to a db using user WordPress credentials Creates a set of text files in a loop based on the values in the form (i do have the script for that in VB but that's not what i want here) Add the set to a zip And make it available as a download for the user Back end is WordPress on PHP/MySQL if you can do it in HTML/Javascript that's fine by me but it looks from some research PHP is easier especially towards the database requirements Some advice/instructions on how to embed this page/form into the wordpress site (i have no site set up that's done by someone else), just need this part I need this to be flexible enough for me to change or add later to the page based on new requirements or change of database/host or other changes that i need to make Thanks for the interest