.ajax uploadProgress

I want to add a progress bar to my file uploader. I noticed that the jquery plugin ajaxForm has an option called uploadProgress: but the standard .ajax doesn't. I can't use that jquery plugin I don't think because I'm not calling it like they show:

$('#form').ajaxForm

And instead I am calling it just like:

.ajax

It appears that the ajaxForm plugin doesn't like being called as:

.ajaxForm

and so therefore I'm not able to make use of the uploadProgress option unless I'm doing something wrong. Is there another way to check the uploadProgress with .ajax so I can make a progress bar update?