I don't know how to the image for menu buttons

[keytone]

I copied two menu files and they both have images. Can anyone tell me how to use the images?

The two menus are:

http://www.dynamicdrive.com/style/cs...let_list_menu/

http://www.dynamicdrive.com/style/cs...vertical_menu/

Thanks

1) Script Title: Sexy Panels Vertical Menu

2) Script URL (on DD): http://www.dynamicdrive.com/style/cs...vertical_menu/

3) Describe problem: it comes with an image, but I'm new to this and don't know what to do with the image.
Can someone have pity and give me some guidance? Thanks