DotNetNuke Modify Portal Registration Page

This is small part of a larger dotnetnuke project I am working on. I am looking to allow users to upload a profile image when they register on the site. I am aware of all the 3rd party modules that allow you to make custom registration forms but all I need is the ability to upload an image. DNN allows defintion of custom user properties out of the box. However dnn does not have a fileupload custom property. If am happy with the work of the selected programmer I have another portion of this project that can be started immediately after this one is done. The uploaded image must only be jpg, gif or png. The file should be sized to 100 x 100 and must be thumbnailed as well. If you have any other suggestion on how to complete this task I am open to suggestions. ## Deliverables There are other requirements such as resizing of the image only allowing jpg gif png etc... ensuring old images are deleted as profiles are updated and a few others