Have you tried this:
To create a virtual machine from the Boot Camp partition
1 From the Virtual Machine Library window, select Boot Camp partition (Windows must be already installed there of course),
which is automatically detected, and click the run arrow.
2 Enter your Mac password to access the Boot Camp partition.
You must have administrator privileges to use the Boot Camp as a virtual
machine. VMware Fusion creates a virtual machine from your Boot Camp
partition and starts Windows.
3 After Windows boots from your Boot Camp virtual machine,
VMwareFusion starts the installation of VMware Tools to enable full
virtual machine functionality and optimize performance for your Boot
Camp partition when used as a virtual machine. Follow the onscreen
instructions and restart your virtual machine when prompted.
4 When the VMware Tools installation is complete, reboot your computer.
The first time you power on your Boot Camp virtual machine after installing
VMware Tools, you will need to reactivate Windows.
from page 12 and 13 of the manual.