I have 3 computers running office 2007 on vista, 2 are OK but in word on one computer the type is classed as "empty" ie empty.doc and cannot open DOCX files. I have tried re-installing and everything else I can think of
Any ideas, it is more annoying than serious

Reregister Word.

Under the Start menu find the Run command. Type the following including the space before the slash and press Enter.

winword.exe /r

Thanks for trying but it is still the same, type classed as Empty and np DOCX

Take a .DOCX file. Right-click on it. Open with...
Pick Microsoft Word and make sure the box is checked to open documents of this type with program.
Do same with a .DOC file.

If this doesn't work, I'm seriously suspecting a virus.

Thanks but I obviously tried this but it does not even offer word, even when I search and select winword it ignores it and only offers Adobe Reader or wordpad