Cascading Drop Down boxes on Form

Hi,

Can anyone help, my powershell knowledge is limited, but I'm looking to do the following:

Read a CSV file that has a list of devices, i.e.

Location, Type, Device,URL

So I would be looking to populate a form where a user can select location, then select the Type, then device and connect to a corresponding URL. 

Any ideas ? If someone could point me in the right direction.

Thanks