[Need Help] sig pic

I can't believe it. I just found my old profile looking through threads and I got my old sig pic. I was wondering, is it possible to increase the size of the pic. Its big on my old prof but tiny on my new one as you can see below, it's supposed to be much bigger. I've totally forgot how do it.

Try uploading it to an image host like Imageshack or Photobucket and pasting the [IMG] code into your sig, instead of using ZU's hosting.

thanks that helps a lot