How to convert numbers to text in a form created in LiveCycle Designer?

I am relatively new to Livecycle Designer and very much a newbie with JavaScript and FormCalc.  I have created a Conditional Sales Contract form and when the user enters a dollar amount (1548.95) I would like to know how to  auto fill a text field with its text equivalent ( One Thousand Five Hunderd and Fourty-eight dollars and ninety-five cents).  I have found two forums explaining how to do this in Acrobat 8 but nothing in LiveCyle Designer.   Can this be done in LiveCycle and can anyone please help me with the script?

thanks