Boston Digital BA735 Speaker & Windows Vista

Hello,

Does anyone knows how to make Boston Digital BA735 Speakers work with Vista.
I'm getting now sound at all after upgrading from Windows XP Pro to Windows Vista.
I have the Sound Blaster Live Digital Output sound card.

I re-installed Windows XP Pro again and speakers worked find.
I go back to Vista and once again I have no sound.

When trying to install different suggested sound drivers I get No device is found.
Would greatly appreciate advise.