Welcome! You mentioned in your post about "fancy signatures" and stuff.
Sigs just use HTML. Here are a couple to get you started:
To post a pic:
<img src="url" width="250" />
Link:
<a href="url" />This is a link</a />
HTH!
Baby #2: Surprise BFP 9.19.12, EDD 5.24.13, natural m/c 10.19.13 at 9w