I am using JA Submit which is a Joomla user content submission tool. It currently has an image uploader above the editor window. I would also like to have a document uploader that will create an attachment link and icon and auto open the document in a new window after the the doc is uploaded and the page is created. This is a very simple add on as it is basically a copy of the image uploading function already in the component. If you want to make some quick easy money get on this one. You can make the bid and do the project and recieve payment all in the same day.
You'll have your file uploader done in a few minutes. It will even show an Icon with what type of document did you uploaded, date and size. It works perfectly with Joomla's content component.