How to i open HP Setup Assistant on a mac when installing a printer? -

When i install my HP Photosmart C3180 on my mac, it installs correctly, but when i m prompted to click continue to open up setup assistant it never opens. This is a problem because it means i cannot scan. I have OS X 10.5.1

Did you install the correct software? On the HP website there are two options for my printer - Basic Driver and Full Feature Software. ? HP Photosmart Basic Driver 10-2007 9.0.0 - 36.35M ? HP Photosmart Full Feature Software and Drivers 10-2007 9.0.0 - 154.09M