First question: Where is the email originating and where is it being received? This is a common problem when a user on an Exchange 4.0 server sends an attachment to one on a 5.0/5.5 server. See MS "Q" article Q182307.
Second question: What is the origin and destination of the Word attachment? If the origin is a Macintosh Exchange Client and is sent through an Exchange 4.0 server to an Exchange 5.0 server, the result will be giberish. See MS "Q" article Q166531.
If the sender is using a POP3 client, like Eudora, the attachment may not be decoded. See MS "Q" article Q166546.
Next question: Is the non-attachment portion of the message in Chinese? If so, the attachment will be garbled. See MS "Q" article Q155817.
Also see the following MS "Q" article: Q177957,
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