No 240 Extreme SSD in Windows Explorer

I can’t access my new SanDisk SDSSDX240GG25 ATA.  It shows up as working normally in Device Manager, but won’t show up under Computer in Wondows Explorer.  I’m running Win7-64 and have the drive plugged directly into my motehrboard.  Any help would be greatly appreciated; thanks.

have you partitioned, formatted, and assigned a drive letter for the drive?