I have two blogs for you to check out.
I started with The Frugal Free Gal, here is her post. I started out fine and ran into problems adding it to my blog because I use WordPress.
At that point, I googled "how to add a signature to wordpress" and went to this blog:
http://lorelle.wordpress.com/2007/04/10/adding-a-signature-to-personalize-your-blog-post/
I got a wee bit confused and ended up back at my WordPress Dashboard. I went to Plugins and searched for Livesig and installed it, activated it and then went to the editor. Once at the editor, I found the "read me" txt file and realized that my LiveSig was already on my blog and in my settings 
Oops. I'm a newbie, does it show?
After realizing that, it was easy peasy. I just clicked on LiveSig in my settings and followed the directions, added my HTML from MyLiveSignature.com and hit save. And I was done!
I'll admit after seeing the comments on The Frugal Free Gal I was thinking 10 minutes tops...it took me at least 30. I'm sure if you know what you're doing it'll go quicker. At least 15 of those minutes was spent trying to figure out what the heck a plugin was and how it works.
Good luck and have fun creating a signature...I know I'm always proud when I don't have to run to the hubby and tell him I broke my blog AND learned something new!
