Windows XP Setup does not recognize hard drive when attempting to reformat and reinstall OS

Hey,

  I''m attempting to reformat my C drive, and reinstall windows xp on it. Ive been through pretty much every dell online instruction, as well as other instructions on how to do this. When I insert my windows xp cd and boot to that cd, the blue setup screen comes up just like it should. I go ahead and get to the point to where the setup asks what partition to install the os on, and then there is the problem. I have 3 hard drives on my computer, and it recognizes only one of them- the much older one that i barely use and dont want to install on. The other two, a raptor 70gb hard drive and another maxtor hard drive are not recognized. I know that xp is compatible on the raptor drive, the drive i wish to install xp on, because I have xp on it right now. So the question is how can i reformat and install the windows xp on a drive that for some reason is not recognized by the xp setup? How can i get the drive to be regonized? This has been extremely frustrating, so any help would be much appreciated. Thanks in advance.

Matt