rebooot it with the cd.
-- im assuming your chinese xp os is still new and wont mind deleting it.
just go through the process of formatting it as usual. you will get to the screen where it tells you to choose a partition/drive to install in.
there should be two, maybe three of them. delete the partitions so it will just contain one drive. once you have done that. format that drive and install the chinese os on it over again.
here is an example. scroll down to the second
step 5 and look at the screen.
http://www.winsupersite.com/showcase...p_sg_clean.asp
it is where you should delete the extra ones and format it in the next step.