What software can i use to create a pic uploader on my website?

I will be creating a website based purely on up loaded images from my users, i want to be able to have a full page grid of images, very small thumbnails. Is there software that i can use for this or do i need an experienced website developer?What software can i use to create a pic uploader on my website?http://www.wellho.net/mouth/1114_PHP-Ima鈥?/a>