Windows 7 64-Bit Ultimate and Sharing

I have set my Windows 7 system to share (read only for everybody) my entire X drive and Y Drive (These are both external usb drives).

When I go to “Videos” and choose “Network” then “Beast” (the name of my machine), it shows me the Y-Drive, but not the X-Drive. In addition, every folder I go to gives me a “There is no media in te current folder” error.

How come it is not seeing any media?

BTW, I have a Western Digital WD TV LIVE HUB MEDIA CENTER w/1TB HD