Huh? If you want to put the HD from an"older" puter into a new one....jumper the drive as a slave and cable it up and restart the puter. If you want it to be the primary IDE...you are going to have to reformat and reinstall the OS. Sata or IDE, you are in the same boat.
Noli Nothis Permittere Te Terere!!
EVGA 680i, Dual EVGA 8800GT'S (650/950), 4 gigs OCZ DDR2 1066, Intel Q9450 at 3.8 Ghz, Koolance Water Cooled, Dual Plextor16x DL DVD+/-RW. Dual WD 250gb 16mb Cache Sata 3.0. 3DMark06 score = 19,168.