SpiderPhp

I want to present several images on my website.
A PHP/JAVA/CSS script would do.
A user should be able to browse through pictures in a similar way the PicLens add-on of Firefox works.

I am using this small free script to upload images:

http://www.cafewebmaster.com/smart-multi-uploader-and-thumbnail-creator-gif-jpeg-png-php

Everything works but some thumbnail images are really low quality. It does not matter if I use imagecopyresized or imagecopyresampled. How can I create high quality thumbnails with PHP?

Actually by php I want to resize the image first then that image will be uploaded.

I can’t see the page, nor the colors, or anything just the script and a blank design view.
How do you edit php in dreamweaver? I donwloaded a script/template and can’t edit the colors nothing. help a noob please

I really want to make a site like Deviantart, although the register can probably come later. I have no idea about Mysql or PHP.