Where can I get all the adobe macromedia cs3 programs?

First of all, it's Adobe. Macromedia no longer exists, Adobe bought them out several years ago. If you want these older versions, you might want to check eBay. Just be careful that if you buy there it is a factory sealed in the box copy, not a downloadable only or CD only version. Those are usually pirated/illegal copies that you cannot register and may contain viruses.