In order to process multiple files, first FTP (or whatever means you use) them over to your server. Then choose the directory you uploaded to on the Server Upload tab in the admin. It will process all the images for you.
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.