Edit: I see that CaptainCranky disagrees.. I think as long as he has an OEM disk of XP and its the right edition (home or pro) it will work (well see above for caveats). Now getting drivers for all of those will certainly be a pain, especially if they are all different models. Because the original setups with restore partitions would have had drivers for the hardware.
Well, I can tell you it isn't a slam dunk. We're on the topic of old computers, so I'll tell you how it works with my Emachine T-5026. If you try and put an OEM Windows disc if the machine, it will halt, and ask for an administrative password for the BIOS. Which of course, isn't supplied.
Not only that, but since the machine is circa 1995, (Intel 915), it has a SATA HDD, which runs as SATA.
I found that out the other day put putting it in standby, slapping another drive in it, and waking it up, the drive being recognized. IDE, to the best of my knowledge, doesn't work that way, you have to reboot.
So, we have SATA drivers slip streamed into the restore disc, or so it would seem.
So, your results my vary. Hopefully they will. It's still not a sure thing.