In Virtual Server (and VPC) it was fairly easy to create a share and place resources on it that you want to share between Host and VM. Easy, not secure for enterprise use. You can;t do this anymore in Hyper-V.
To move/copy.share files/resources between host and VM you should use the library in SCVMM. If you aren't using SCVMM, then you must use regular ol' networking to transfer files between the host (sometimes also called parent partition) and VMs, or VM to VM.
To Share Files Between Host and VM
- Create an "Internal" network in Hyper-V Virtual Network Manager.
According to the instructions in the Hyper-V Getting Started Guide