Allow me to add notes here for those who search. Remeber I'm using Mandrake, and some of these tools are unique to Mandrake.
1) If SCSI ID is higher than the ID on the drive you boot from, you won't boot. This may be because the newly added drive was formerly part of a Linux RAID set. Changing ID to one higher than the boot drive fixed this.
2) KUDZU detected and configured the drive on boot - cool!
3) HardDrake allowed me to partition and format using the KDE GUI, very nice. 
Worked slick, drive is now operational. Console purists stop groaning about #3, I'm trying to learn the Mandrake toolsets.
Thanks all for your help!