Your code should run against whichever document is active at the time. That said, it could be reduced to:
Code:
Sub subCurlyQuots()
'
' CurlyQuotes Macro
'
'
With ActiveDocument.Content.Find
.ClearFormatting
.Replacement.ClearFormatting
.Text = """"
.Replacement.Text = "^&"
.Forward = True
.Wrap = wdFindContinue
.Format = False
.MatchCase = False
.MatchWholeWord = False
.MatchWildcards = False
.MatchSoundsLike = False
.MatchAllWordForms = False
.Execute Replace:=wdReplaceAll
.Text = "'"
.Execute Replace:=wdReplaceAll
End With
End Sub
PS: When posting code, please use the code tags. They're on the 'Go Advanced' tab.