Are you licensed through the Volume Licensing program? If so, you can get the downloaders from the Volume Licensing site (http:\\licensing.adobe.com). Otherwise, there is a community effort by Gavin Pickin to provide a library of past installers, including CF9: http://tinyurl.com/cfdownloads. See the blog post explaining it here: http://www.gpickin.com/index.cfm/blog/cfml-server-a-different-type-of-coldfusion-repo-cold fusion-installs.
-Carl V.