Additionally with the new version of VMware Fusion 6 you can use the steps below:
1. Launch VMware Fusion 6
2. From the Mac menu bar click on Virtual Machines > Settings > Startup Disk
3. Press and hold the Option key on the keyboard - you will find the option - "Restart to firmware..." click on the same
You will be taken directly to the BIOS screen the next time the virtual machine is started.