Do you not see it at all? Or is the font just incorrect? What happens if you type CU5 or CU5X on the command line? If you don't get an answer here contact firstname.lastname@example.org.
The Chinese versions were built with a particular locale and that locale has to be available on your machine. You can edit the cu5.dbu file to change the locale if you need to. The default is Chinese_Taiwan.950 and Chinese_Singapore.936 for CU5X and CUSX (for XP) but you could try just the word "chinese". If you can't get it to work contact email@example.com.