Reg Currency Description and Amount in words

Hi

Can anybody help me out in finding Function Module for Currency Descripton and Amount in words.

For Example, if currency type is <b>USD</b> and the amount is <b>29,012.50</b>

then it should display the currency description as <b>The sum of US Dollars</b> and the amount in words as <b>Twenty Nine Thousand Twelve and Cents Fifty</b> and it should work for any currency type.

Thanks in Advance.

Swathi