Your sig is not readable because the font is black.

I'd bet dollars to buttons that you simply copy and pasted it from another forum, where it was in black font. ;) For some reason when you do that on this forum the formatting of the source is retained. Sometimes you will have a "paste without formatting" option when you right click, or you can paste it into a .txt where the formatting will be removed and then copy paste from there.
I've had to do this sometimes when making posts.

What do you want to be walked through?