Windows 7 networking navigation just like Vista sucks big time.  If you are wondering how to see a folder shared from VirtualBox, then the answer is you can’t do it directly like in XP going to Virtual Box Shared folders, because that thing does not exist. I’ve found out that you need to navigate to the shared folder by entering in the address bar
\\vboxsvr\<share>
Where <share> is the name you have used when sharing the folder within VirtualBox.

Windows Vista is the most secure operating system that Microsoft has produced. With a multitude of features that make the operating system secure; this operating system like ALL operating systems can be made more secure by tweaking the inner workings of Vista. System tweaks for users is often found by the end user. This series explores different methodologies of protecting the operating system while allow the user to keep a work friendly workspace.
Vista Firewall Tweaks
The firewall control in Vista is one of the most important tweaks. Microsoft’s firewall in Windows …