How long would this take you?

nomss

Making something like this: http://www.shirtmagic.com/design_and_buy.php

Pretty close to the above, like getting all the details: clipart, different product, uploading image.

Approximately, how long would that take, and how much would you charge?

What would be your tool of choice? For ex: silverlight, javascript, javaapplet, PHP etc...