SCSI + IDE together

[Gayn Winters]

What does it take to be able to use a mixture of SCSI and IDE (ATA)
disks?  I'd like to be able to copy (dd) one to another.   

I'd like to be able to boot off a floppy or CD to do the disk copy, but
booting off a third hard drive would suffice.  

I do have a couple disk cloning programs, but none seems to recognize a
SCSI disk and an IDE disk simultaneously.

TIA for any help!

-gayn