Have you partitioned and formatted your second drive, and assigned it a drive letter? It won't show up in Windows until you do this.
As it shows up in hardware management, I'd guess the answer is no. Got to "Manage" from the "Computer" right-click menu and then select "Disk Management". From here you can partition and format the drive (this should automatically assign it a letter). Be careful to select the correct disk!
Edit: Oops - Daship beat me to it - but don't forget the partition stage.