Ok, tried that. But when I plug it into my laptop, it doesn't read it. Nothing comes up in My Computer.
Have you tried looking in Disk Management to see if it shows up there?
Not sure what OS you are using, but in Windows 7 go to Control Panel / Administrative Tools / Computer Management and click Disk Management in the left pane of the window that appears. The process should be similar in Windows XP.
Also, when you connected it to your laptop were any drivers for the enclosure installed?