Shared folder unvailable

[kRel]

Forgive me if the topic has already been treated, English is not my language, then I have serious difficulties in searches in the forum ...

I have windows 7 64 bit, a home network and I can not to run the shared folder in any way.

I installed VirtualBox-VirtualBox 4.1.26 and its Guest Addiction.

After the complete installation and configuration of VirtualBox, Guest addiction, my copy of Windows 7 64 bit, and after creating the shared folder, RESULTING IN VIRTUALBOX MENU, if I open the Windows network, DOES NOT EXIST the folder that I have specially created and then shared by Virtualbox, so I can not share files.

With previous versions of VirtualBox I've never had problems with the shared folder.

Help me please ...

EDIT:
With this version of VirtualBox, each face from the "Devices" open "Shared Folders" I get a little me-up that warns: "The VirtualBox Guest Addiction does not seem to be present on this virtual machine .... " However, soon after you open the shared folder ... This can be a problem??

[ChipMcK]

after creating the shared folder, RESULTING IN VIRTUALBOX MENU

Please list the steps you did to establish a Shared Folder for the Virtual Machine.

And supply additional data as in Minimum information needed for assistance viewtopic.php?f=24&t=48476

[kRel]

after creating the shared folder, RESULTING IN VIRTUALBOX MENU

Please list the steps you did to establish a Shared Folder for the Virtual Machine.

And supply additional data as in Minimum information needed for assistance

From the menu "Devices" virtual machine,
there is "Install Guest Addiction". I clicked on that item. Only.

However, just now in the "My Computer" of the virtual machine I found the CD "VirtualBox Guest Addiction" that was not there before.
I clicked on the icon and I installed it - ONLY NOW - the Guest Addiction: now the shared folder is present!

are two days that we I fight ...

Thanks anyway for your time