This file uploader page is a 'fail-safe' method of uploading your images to us. It isn't capable of uploading folders.
Click on the 'Browse' button and navigate to your folder of images and click on the first file. You will see it has been added to the list. Repeat this for every file that you need to upload and the list will grow. Check the list of images to be sure you have included all that you meant to. Now simply add your name (so we can match the upload with the order) and your email address.
Now click 'upload files'. Once the program has gathered the data you will see a small progress monitor screen that shows you each file uploading.
Once the uploads are complete you will be taken to a 'thank you' page and you will receive an email that contains a list of the images you uploaded. Be sure to double check this to make sure you haven't missed something or uploaded an image in error.