As BigJim pointed out, you can do that... or you can do it easier. Just paste the link, highlight the whole link, then start typing. Rather than using spaces, you have to use underscores though.
As far as pictures... Photobucket is so much easier than uploading them here. Just upload them, then grab the code from photobucket. It'll look like this when it's done : [img]http://www.photobucket.com/albums/mfdrookie615/photo548392098.html[img]
EDIT: what you're talking about is the gallery pictures. You need to upload pics to your albums in your profile