I had trouble when I was putting the sig in 'cause I didn't realize that the pic and the css were in the same code so I put the pic in then put the code in then I deleted part of the code to only get one pic. THEN I realized that it would have been much easier to just take the first pic out XD In the end, however, it all worked out :P
Naw, ya don't sound stupid. XD Masa is still sorta a n00b to it as well. If you lookit my current sig, there's a little box attached to the bottom of it. That's a CSS box. You can use coding to change the color, width, size, text, images, etc.
I'm learning basic CSS coding, so it'd be a nice opportunity to practice. :3