Why doesnt my computer see my hard drive?

[BullHorn7]

it's an external IDE HD with a Sata Adapter hooked via USB.
the thing is my Device manager sees it but the "MY computer" doesnt and cant seem to figure out why or how to see what's on it...

 

[jsrudd]

Format the disk. Open run dialogue box and type compmgmt.msc. Choose Disk management to see the disks.