banner change problems

[nelsonarts]

I read the forum to find out how to change the banner and found the code but when I change to my .jpg and my store name, the banner disappears and there is no missing image x or anything.

 

I changed code

 

tep_image(DIR_WS_IMAGES . 'oscommerce.gif', 'osCommerce') . '</a>'

 

to

 

tep_image(DIR_WS_IMAGES . 'newbanner.jpg', 'Glow-Tech') . '</a>'

 

Image is in the images folder. Any reason why this wouldn't work?

 

Thanks