Ah well, if you have a third drive big enough, then job done... once the image is finished, copy or move it to the third drive, shutdown the PC and remove the OLD boot drive (just to save accidental overwrtting), then power on and go into the BIOS, set the New HDD as primary, then save and exit, then boot from the Restore CD, once loaded you will easily find the Restore feature, and simply tell it were the Image is on the Third drive and what drive to restore it too and bob's your uncle 
