I really don't know if you need the Macro add on stuff with your camera. In macro mode or super macro you should be able to get that small of a flower, I would think.
Here is a macro of a tulip I took a few weeks ago. This was with a Point and shot that is basically the Olympus equivalent to your FZ8. No additional lenses or anything. Shot in manual mode, and turned Macro mode on. I was pretty darn close to this flower too.
Camera OLYMPUS IMAGING CORP. SP560UZ
Exposure Time 0.0166s (1/60)
Aperture f/3.5
ISO 50
Focal Length 9.84mm
Photo Dimensions 2448 x 3264
File Name Tulip.jpg
File Size 3.45