Welcome! This board is so dead that it's great to have new life brought into it. It's a really great fun group of mom's!
To post pictures, you go to photobucket or imageshack or something like that and upload your picture, then you want to use the forum code to paste it into the post. For your signature, you go into "my bump" and then settings under that....it will give you all the options of setting your avatar and signature and all that fun stuff.
Glad to have another October mom around here!