500GB sata internal drive

I just purchased a 500gb WD Caviar Blue drive with the intention of installing it to an USB hardrive enclosure.  Manhattan MH Hard Drive Enclosure.  I installed the harddrive into the enclosue as per instructions, plugged everything, was notified by Windows XP that the device was installed and ready to use.  When I opened My Computer, the drive was not listed.  When I went to the Device Manager, the device was listed, and said it was running properly.  How can I get the icon on “My Computer”

Hello everyone, I found the solution.  The drive needed to be formatted!!!  Very simple but when duncehood is present, nuttin’ is easy!!