MS Word 2000 Error “There was an error opening the file”

Hi All,

I am running MS Office 2000 on windows xp. I had the MS Office 2007 compatibility pack installed and everything was working fine. I could easily open, view and edit any .docx files, until recently, been getting this error “There was an error opening the file” whenever I try to open any .docx.
I have tried uninstalling the pack and all ms office, manually deleted any installation files remained, reinstall everything again and still getting the same error.
Any advice will be appreciated.

Many Thanks,

Omar