Windows 7: Wd world edition 2tb

Hi, just bought one of these drives, & i have a couple of problems.
We have Windows 7 home premium 64bit.
First problem, we can view all the data on the wd, on other pcs, wireless & wired, so they are all on the network, but when i try to view music pictures etc, on the xbox 360 it says no data, although the wd shows up on the xbox 360.

Second problem, WD anywhere back up has backed up my data o.k, but when i try view & restore, it says cannot run under this version of windows.
Any one know a way of getting around this, or should i send the drive back for a refund.