Upgrading to Win 7?

Running the Win 7 Upgrade Advisor it tells me that:

1. Your current graphics adapter won't support the Windows Aero user
interface. If you want to experience the benefits of Windows Aero, contact
your PC manufacturer or retailer to see if an upgrade is available.

Graphics card is an Nvidia AGP Geforce 6600 with 512MB RAM. There are Win 7
drivers available for this card but will they solve the Aero problem or is
the card incompatible from a hardware point of view?
Is Aero purely cosmetic and could I live without it?

2. Creative EMU10K1 Audio Processor (WDM)
Creative Technology, Ltd. Creative Game Port Not compatible The
driver installed for this device is not compatible with Windows 7.
This is a Soundblaster Live 5.1 soundcard.
Win 7 drivers are available for this so I'm assuming it will work OK.

. 3. hp deskjet 840c series
Hewlett-Packard Unknown We don't have compatibility information
about this device.




HP Support says Win 7 will install a basic driver with limited functions,
it's a fair age now so maybe it's time to break out and buy a new one.

Any advice appreciated

Kenny