bsimser: When making an answer click "Full editor" and you can attach files to your post.
If I'm not mistaken, even new accounts can do this attachment.
Anyway, always prefer to post a capx rather than a screenshot, it's always nicer to be able to look into the project of people asking for help to provide the best answer according to their current project.
Yes, but they're just plopped down at the end of the post so there's no real way to create a response with a "do this" <insert image> "then this" <insert image> etc. without uploading the images elsewhere.
A capx is great, unfortunately sometimes I'm not able to post one when answering a question, but it's a good option that most people should take advantage of (as we drift off-topic and hijack this thread).