Converting old Word documents to the new .docx format can be a lot of work. Thanks to PowerShell, you can automate the conversion:
function Convert-WordDocument { param ( [Parameter(Mandatory,ValueFromPipeline,ValueFromPipelineByPropertyName)] [string] [Alias('FullName')] $Path ) begin { # launch Word $word = New-Object -ComObject Word.Application } process { # determine target path $pathOut = [System.IO.Path]::ChangeExtension($Path, '.docx') # open the document $doc = $word.Documents.Open($Path) Write-Progress -Activity 'Converting' -Status $PathOut # important: do the actual conversion $doc.Convert() # save in the appropriate format $doc.SaveAs([ref]$PathOut,[ref]16) # close document $word.ActiveDocument.Close() } end { # close word $word.Quit() } }