Sorry it's taken my so long to get back to you! I'm not sure where the time goes.
I believe you want to put the purple WISH Member banner in your signature? Is that right?
I'll go remind myself of the steps you need and I'll come back and edit this post with instructions.
Click on "User CP" at the top of your screen.
Click on "Edit Profile" to open your profile.
Find the "Signature" block (grey block to enter what you want in your signature).
I need to show you what to type, but if I type it exactly as you need it, you'll only see the picture.
So, type the following but ignore all the " (quote) marks, OK?
In that grey signature block, type "[" and then "img" and then "]" - no spaces between them.
Then type "http://www.disboards.com/wish/memberwish.gif".
Then type "[", then "/img", and then "]".
It looks complicated but once you've done it a couple times, it will get easier.
Hope this helps!
I also hope you are doing well with WW. It can be tough when you're first starting out, but you'll get the hang of it. There are lots of people doing WW around here so feel free to post any questions!
Have a great day!