I'm new to VirtualBox and Linux. I've set up VirtualBox 4.0.4 on Windows 7. Successfully created a virtual machine running Ubuntu server 10.10 64 bit. I'm trying to set up Shared Folders. Prerequisite is Guest Additions. I've followed the Manual, as much as I understand it, and have Googled the heck out of trying to get past this. Here's what I've done: