Displaying values in dropdown list based on selection in another dropdown

Hi,

Am totally new to cold fusion.I have a web page and i will tell what i want to accomplish...........
I have a dropdown1 which must display company values from a table through backend when the page gets loaded.
When i select any company from the drop down1 ;the corresponding vendors for the company must be displayed in the dropdown2...
When i select any vendors from the dropdownlist2 the adrress of the vendors must be displayed in 2 textboxes .
Can anyone help me in guiding how to accomplish this giving sample code it would be of great use to me
And i dont want to do this using "javascript" i want it to be done fully using cold fusion