Download the file "SvgView.exe" on : "http://www.adobe.com/svg/viewer/install/
Double click on your "svgView.exe".
For Internet Explorer, It's finished.
For Netscape/Mozilla, copy the following files in the "plugins" directory of your browser (ie : C:/Program Files/Netscape/Netscape/Plugins)
C:\Program Files\Common Files\Adobe\SVG Viewer 3.0\Plugins\NPSVG3.dll
C:\Program Files\Common Files\Adobe\SVG Viewer 3.0\Plugins\NPSVG3.zip