urgent! chinese characters problem!!

I really need some help here. I have just purchases chinese supplement,
chinese characters seem
to be displayed correctly in the beginning, then i noticed that some
characters are missing!!

I typed up some chinese characters in a document in micro-word, saved as
Utf-8, then open the same document using ped using Utf-8 as well. some
Chinese characters just got disappeared!
for example. word: ?? only shows up as ? in Ped.

problem stil persist if i save the document in micro-word as
Chinese-simplied (hz), then open Ped with Hz encoding.

is there an patch for chinese supplement???