This should do it:
Code:
Sub SearchInQuotes()
Dim bWC As Boolean
Dim oRng As Word.Range
Set oRng = ActiveDocument.Range
With oRng.Find
.MatchWildcards = True
'find curly
'.Text = "^0147*^0148"
'Find straight
'.Text = "^34*^34"
'Find both
.Text = "[^34^0147]*[^34^0148]"
While .Execute
oRng.Characters(1).Delete
oRng.Characters.Last.Delete
oRng.Font.Bold = True
oRng.Collapse wdCollapseEnd
Wend
End With
End Sub