Installing problem(hypertrm.dl)

[Mike]

I was installing windows xp pro on my moms computer,i was
at the installation part when it gave me an error
message,saying "setup cannot copy hypertrm.dl_,please
ensure that the cd rom disk of windows professional is in
the cd rom drive"later on i tried installing it again
except from the install optional companants option,same
error.Is there anyway i can get this to work without
reformatting the comp?