While VMware Fusion does not virtualize FireWire devices directly, you are able to access and use FireWire hard drives, CD/DVD drives, and printers with Mac drivers with VMware Fusion 2.

See below for details:

Can I access my FireWire hard drives in Windows?
Yes, you can access your FireWire hard drives in VMware Fusion by mapping the hard drive to a VMware Shared Folder. Go to the Virtual Machine menu, select Shared Folders and select Add Shared Folder. Select your FireWire hard drive and click Open to assign your FireWire disk to the shared folder. To access your FireWire hard drive in Windows, go to My Computer and use the drive letter for Shared Folders and select your FireWire hard disk. The advantage of using Shared Folders is that you can access HFS formatted FireWire drives in Windows without any additional software.

Can I use my FireWire CD and DVD drives in Windows?
Yes, you can access your FireWire CD/DVD drives in VMware Fusion by
assigning your FireWire CD/DVD drive to a specific virtual CD/DVD drive. Go to the Virtual Machine menu, select CD/DVD and select CD/DVD Settings. Select "Specify physical CD/DVD drive" and choose your FireWire CD/DVD drive and close the Settings windows. To access your FireWire CD/DVD drive in Windows, go to My Computer and choose your CD/DVD drive which is now using the FireWire CD/DVD drive for it.

Can I use my FireWire printer in Windows?
If your FireWire printer has Mac drivers, you can can use it via Apple's printer sharing feature or VMware Fusion's driverless printing feature.

Can I use my FireWire camera or scanner in Windows?
No, VMware Fusion does not support virtualizing FireWire devices, so you cannot use your FireWire camera or scanner with Windows.