I have images that I want to upload but they are almost 7MB each, how do I do that? I try to upload individual ones but it won't upload.
Use the batch-add process. As the admin, you shouldn't upload images via the web interface, you should upload them via FTP and then batch add them to your gallery.
7MB images shouldn't be used on the web, I recommend resizing it on the client before uploading. I wouldn't wait for such a huge file to be downloaded, but leave your page immediately if I was visiting your site. Such huge files are a waste of bandwidth and webspace.