How to disable Image Uploading v4.1.4

[LVC]

Hi,

for the life of me I cannot figure how to do the following

1. Not allow users to upload images into forum posts
2. when they click on insert image icon in the editor -- I want the user to just be able to paste url so editor could place the tags in the post (same as when you click on the "insert an image" icon in the vbulletin.org editor.

As of right now-- unless they paste the image tags themselves (i.e. copy/paste from Photobucket etc) -- all of their images automatically get uploaded and inserted into database.

I do not want this -- what can I do?

Thanks