If your making new PC images from scratch, make sure you install the “Install or Update Virtual Machine Additions” off the Actions menu.
This allows you to not have your mouse “grabbed” by the VPC, also allows sharing of your host folders as network mappings in the virtual machine.
The other feature I really like that not on by default is “Undo Disks”. When this is enabled a delta imagine is made, which you can or not merger with your main hard drive image. This is a must for installer testing, as you can close without saving and reboot the machine clean in 10 seconds, and install again. It can be slow when you want to merge, so I turned it on after letting all the update software do there thing.