Iomega external HD

Hi All, I just purchased and installed a 1TB iomega external HD.
Model MDHD10T-U2.
I can rip and playback on multiple local drives but can rip but not playback from the external drive. I’ve even tried copying a known good movie from another drive and it still wont playback. The error message is… “Windows Media player cannot playback the DVD because the disk prohibts playback from your region of the world.”

Any suggestions???

Thanks, ramjef97

Vista / Athalon 64 Dual 4400 / RAM 2 GB / Video GTS 8800