This is a easy way to find out what drive you need, may take a bit to set up but it will work and its a good tool to have.
ubdcd 4 windows
ubd4win.com I think is the website. Once you download the files you will have installed Bart PE and Autostreamer and you will need a copy of windows xp with sp2. If you dont have the install with SP2 on it you can download the sp2 install file and use autostreamer to make it sp2.
BartPE + a copy of Windows CD copyed to a dir on a hard drive
"C:\WINXPSP2"
once you have the cd copyed you can use BartPE to target it. This will then make the boot disk into a ISO file.
Take the ISO and Burn it to a CD.. Boot the computer up...
once in the Windows Mode from the CD you need to open the program
"unknowndevice" this will tell you the name of the SCSI Drive ether be ATA or RAID.
or find a boot disc that has the option to tell you all the unknown device.
goto driveguide.com and download. Then just do what Mark said use a USB thumb drive or a floppy disc and on Windows Setup Screen you will see the first thing that comes up " HIT F6"
I am having the same problem with come custom Labtops here in Iraq and I think there just burned out bc once i detect the drive and format the partion it ask me to insert the disk again and it wont detect grrrrr...
Hope this helps