||Iīve been facing the same problem and tried all the things sugested here, even this one - "msiexec /A (setup location)\setup.msi" but didnīt work.
To release my doubts, I tried to install it in other pc using the same media (CDROM). To my surprise, it worked without any problem!
So, if de media is ok for one machine, why it doesnīt work for other one? (The machines are the same -twins).
Is there any additional setup for windows xp sp2, or even for BIOS setup?
Any more sugestions???