How do I embed a link to a photo?

Hello :)

I am using Photoshop V7 and am preparing an image for use on an osCommerce website. I do not have any obvious option to make the uploaded image link to another page within the osCommerce site... so I am hoping to embed a link in the image before uploading to the osCommerce site.

Is it possible to assign a hidden/or visible link to an image within Photoshop V7 before saving as a gif for example? How would this be done?

Thank You so much!