There will be a jumper (a plastice coated connector that shorts two pins) on the back of your drive and a picture either on the drive or in your documentation as to where to place the jumper for slave, standalone, master, or cable select.
Raid is opening up a new bag of worms that you don't want to do yet. Later you might want to pick up a couple of used drives of the same size just to experiemnt. For now, stick with normal IDE.