well, 1st it should not be asking for those, unless
A: infected
B: was infected and AV prog removed files
C: someone built the install with Nlite, or otherwise made a light version missing some files.
if you are inserting the windows CD - is it a GENUINE WINDOWS XP CD or is it a RECOVERY DISC? a WXP cd should be ok, and would suggest the issues above. an Recovery disc will not work, as it does not have the "i386" file. it is a special image of a preloaded XP that will not work in this instance.
Try running an AV like
www.MalwareBytes.org ant-malware (google it) then fix selected and roboot, try again. I have my doubts in this case though.
option two: this makes more sense to me:
use your WIN disc and FRESH INSTALL windows. do you really want all of someone else's junk on the PC?
if you don't want to do that then you can just:
a. /rename the documents/settings folder
b.run xp install disc, use the recovery option (NOT the recovery console) this will copy the i386 files back as they are meant to be.
c. put the D&S folder back.
hang on.. I reread that post. you said firmware. did you mean firmware? or did you mean the normal software you are supposed to install?