Installing macromedia extensions, mxp file type
To install a mxp file (e.g flash components or dreamweaver components) you need macromedia extension manager, it can be downloaded for free from www.adobe.com, it usually comes with flash or other macromedia products. After you have downloaded the mxp file open extension manager, select the product in which you want to install the extension (Flash MX, Flash MX 2004, Dreamweaver) from the drop down menu then click "install new extension", browse to the mxp file and click "install", now just fallow the instructions ("next", "accept"). Now the extension should be installed and displayed in extension manager list, you can click on the installed extension to see details about it.