Share Folders not Found in VirtualBox VM

I just create a new VM for Visual Studio 14 CTP Testing. I try  to load the Visual Studio CTP from the share folder in my local machine.

when i open the windows explorer, but i can not find the folder that i had configure as the share folder.




the trick is that i must have the VBoxGuestAddtions installed inside the VM, then reboot the VM to get access to the share folder






you can use the folllowing link to download the ISO file

http://download.virtualbox.org/virtualbox/4.3.8/VBoxGuestAdditions_4.3.8.iso