VirtualPC and VirtualServer are the standard free virtualisation technologies for W2k, WinXP, Vista and Win 7 hosts. I am using VirtualPC since 2004, creating many VirtualPC machines .
Now with Win8:
VirtualPC can't be installed on a Win8 host ( while it was an integreated product on Win7 hosts ).
The successor Hyper-V is just available for 64-bit Windows.
So on 32-bit Win8 systems, if you want to use virtualisation, you have to turn to another solution.
I decided to turn to VirtualBox, as it may load VirtualPC machines with dynamic file space allocation ( VirtualPC New Virtual Machine Wizard: “Virtual hard disk size” < “Maximum virtual hard disk size” ) without transformation . With VMware, you need to transform the VirtualPC file system, by the free “VMware vCenter Converter” .
A VirtualPC is part of the Windows network, i.e. “Entire Network / Microsoft Windows Network / Workgroup / <VirtualPC>”. On that base, you may create shares, e.g. “Entire Network / Microsoft Windows Network / Workgroup / <Windows Host> / <Shared Host Folder>”.
A VirtualBox isn't part of the Windows network. You may create shares of folders of your local computer, e.g. “Entire Network / VirtualBox Shared Folders / <Shared Host Folder>”.