Magically the drive has now been recognized. I don't know how or why (but I'm grateful that it is!!!). I didn't do anything different but when I turned it on this morning, POOF!!! Both drives were there and it was registering the old 250 GB Seagate SATA as the main drive. I can't explain it because all I did was push the on button. I think a fairy godmother must have waved her wand over it last night. Go figure! (There's a reason I'm not a computer tech! I sooooo admire you people who do this all the time!)
Thanks for the help. Guess for now, it's fixed.