You can get more information at the Squarefoot Magento blog here: www.squarefootmagento.com/news/file-upload-progress-bar-magento
Full working demo of the file uploader / progress bar here: http://squarefootmagento.com/demo/magento-file-upload-progress-bar.html
With Customer Attributes Extension you can add customer attribute ‘file upload’ to registration page and the page of checkout when customer register during checkout. Moreover it’s possible to see the image or file uploaded in admon panel on customer grid, order grid, on order view pages. Moreover both you and the cuatomer can edit the attribute in customer’s account.
Discover detailed user guide, video and see the live demo here http://amasty.com/customer-attributes.html