Using Health & Fitness Devices with HealthVault

What kinds of devices work with HealthVault?
How do I get info from my device to my HealthVault record?
What is HealthVault Connection Center?
I’m on a Mac. Can I still use HealthVault Connection Center?
Do I have to have HealthVault Connection Center to use my device with HealthVault?
What if I already have a device and it doesn’t work with HealthVault? Can I still use it?
Where do I go in HealthVault to find the info I uploaded from my device?
Once my device data is in HealthVault, what do I do with it?