Selecting the Recording Device

I am not anywhere familiar with computers, so please bear with me. On Windows Vista, when I try to choose the line-in option in the “Recording Device” dropdown it won’t let me do it. I want to burn CDs from my reel to reel tape recorder, it won’t let me enter the source. And what should I be entering when I find out how to do it?
Thanks, Joe

Yes, Vista can be very entertaining. Does anything in here help?

Windows Control Panel