Customers uploading files for Custom products on checkout

Dear All

Our website sells custom products. We would like to add the ability for a customer to upload their logo file on checkout.

At present our customers have to email us their images after ordering which we then upload to a custom image field relating to the relevant order.

1) How can we enable the ability of a customer to upload files on checkout? As standard I don’t think the customer centre has the media items permission enabled.

2) If NS doesn’t allow this does anyone have an alternative solution? I was thinking along the lines of presenting an upload field on a checkout page which uploads the image to a 3rd party server, then posts the image link back to a netsuite custom hyperlink field. I don’t have any idea how to achieve this however so any help would be very much appreciated.