Start your VM
As it tries to boot (it will fail) select CD menu and "Capture ISO Image" and browse to your downloaded bootdisk image.
Verify you have captured the Win95a.iso bootdisk image (Do not click on this, just view to confirm it has captured)
From the Action menu, send the Three-Finger-Salute to your VM to restart it
Your VM should now boot from the bootdisk and Drive R (virtual CD Drive) will create a fake A drive
You can now run FDISK to prepare your virtual disk for Windows
Restart using Action menu