Re: Menu :: instead of +
First you need to go into Admin-->General and put a check next to Display menus as folders.
The images used for the + and - images are /img/icons/fo.gif and /img/icons/fo.gif.
You can use any images you want just by using those filenames for your custom icons and putting them in the /img/icons/ folder. If you want the + and - icons used on this site by the tikineat theme, then just right-click and save the images, and upload them to your /img/icons/ folder.