updating image

[sticks]

Hi all. I'm quite new to this but managing to create a database for travel products which includes an administrator uploading three images for each product. Luckily for me this all works sweet.

But, I have a page called edit product which displays all the product's details for amending if so desired but for the life of me I can not work out how to update/change the images if the administrator so desires.

Can anybody please point me in the right direction as I've run out of newbie ideas :)

Thanks, Sheryll.