I just installed Mdk 10 on my 770z. Still no sound, and neither wireless card that I have tried, the Belkin F5D6020 or the D-Link DWL-650 works. I am not going to spend endless hours more trying to get these cards to work. Anyone recommend a wireless card that does, no problem? For now its W98 and the Belkin for the web, I guess. Jon Flanders