Now the build would be this and you can use 7-zip to open it, which you can find here, 7z is just a compression format, or you could call it a compression container or something like that its like a .zip format but better.
download the build, using 7zip to extract it and save it somewhere good like:
C:\Program Files\Blender Foundation\Blender-2.63.2-r46078\Blender</b>
I tend to put all the various blender versions into the same folder with each version labeled clearly in there own folder within that folder:
Blender Foundation --> Blender [Version#] [Revision#] --> Blender
The official build’s installer will have already created this folder for you so all you need to do is find it and save there. Usually in C:\Program Files or C:\Program Files (x86) or something similar on Windows. Im referring to the Blender Foundation folder.
Make sure your not saving over your old Blender installation, and if, for some strange reason, you want to have all your old setting back to the way that they were then open you old blender startup file named Startup.blend located here:
If you can’t find it then do a search for startup.blend
Note - You can find the revision # on the top right corner of the splash screen
Another Note - You will need Microsoft Visual C++ 2008 SP1 Redistributable Package (x64) installed which you can find here, you probably already have this installed but if you have problems then this could be the reason.