How do I use image buttons instead of css buttons?

[addamroy]

There's a few sets of buttons in the graphics section of the forum I'd like to use, however after uploading and overwriting them, I realized that nearly all the buttons on my forum are actually constructed via CSS and phrases rather than images.

Does this mean the button sets here are no good for vb4 and I'd have to make manual template edits everywhere to display the image buttons instead? Is there a setting somewhere so i can use the buttons as images instead