I have a 2003 version, and each time I receive an email attachment with doc.x at the end, I cannot open it. I get "error in opening" message. I have downloaded all updates, and still cannot get the attachment to open. This has happened twice with two different emails.

Sounds like you need to install the Microsoft Office Compatibility Pack. http://office.microsoft.com/en-us/products/HA101686761033.aspxVisit my blog: anITKB.com, an IT Knowledge Base.

Hi, Please try Jorge’s suggestion first. If the issue persists, I suggest further discussing it in our Word newsgroup: http://www.microsoft.com/office/community/en-us/default.mspx?dg=microsoft.public.word.docmanagement&lang=en&cr=US Tim Quan - MSFT