How do you get a Siggy? (More questions, I need answers!)

[DSiDewd]

How do I insert Images? I have to put a URL, why can't I just Browse my computer and put it? Also, when I press like XX-Large for my siggy, it just puts [size=xx-large]

Anyone wanna help me?

For inserting images, use Imageshack.us to upload the image. When it's done, copy the direct link url, and put that into the url box. Make sure you remove the http:// that is already in the URL box before putting in the Imageshack URL, or else it won't work right.
Also, put your text after the [size=xx-large] and press Close Tags.