How Can I Add More Than One Image At A Time???

Here's how you do it:

You go to the file you want (which would most likely be pictures)
You hold in the 'Ctrl' button while you pick your pictures, then you click ok, and you can upload up to 20 images At a time.
But they all have the same description, name, etc. and the only way you can change the name and stuff is to edit them after they're submitted.

Hope this helps!