WINdows FILE PROTECTION cant affected

mine is Windows XP Home Ed. SP1

a little bit old… he2
but the problem’s

i cant install MS OFFICE 2003
or even other software that needed to be installed using setup that use MSI… file

so if i run the setup
then after a certain percentage…
it stopped…

and appeared a window file protection
please insert CD WIN XP HOME ED Sp1

If i click CANCEL…
my setup also cancelled…
OMG!!
so…. how could i cancel this
but my setup office could be installed?

Safe mode?
no… this cant be installed on safe mode… 🙁
anyone could help me out?

i already try to follow this link
http://www.pctools.com/guides/registry/detail/790/

but still cant…
anyone could help me out??