Wrong there! A sata drive doesn't use jumper settings since it runs a totally different bus. The sata port the drive is plugged into decides whether it is a primary master/slave or secondary master/slave.
Before adding the 80gb ide in to copy files from it you will Windows installed on the 160gb sata model since the Windows installer will otherwise look for the first hard drive on the system. Despite seeing Windows on the sata the boot files will likely end up on the 80gb ide. The ide overrides sata by default.
For data rescue you can later slave the 80gb to the optical drive if there is only one ide channel on the board there. Windows may then have to install it as a new hardware in order to load drivers and be able to access it. Let Windows perform the auto search through it's own driver base.