Image upload script?

Anyone have an image upload script? I want customers to be able to upload photos to my site, and store them in a private folder. Googled it, but found nothing that seemed really good. And free.

are you looking a script that can upload multiple images to a folder?

yes, multiple images. I'd prefer it to be able to upload zip files. Right now, I'm using a wp plugin from nextgen galleries. It works good, but doesn't allow multiple uploads and no zipped file. Something that allowed zipped files would be best.