Ok no problem but this one which is updated again; 

Sub Replacing()

    Application.ScreenUpdating = False
    Application.EnableEvents = False
    
    Application.Cursor = xlWait
    Application.DisplayStatusBar = True
    Application.StatusBar = "Generating DM Pack, please wait!"
    
    Dim sFile     As String
    Dim wrdApp    As Word.Application
    Dim wrdDoc    As Word.Document
    Dim sInput(7) As String, sOutput(7) As String

    sFile = "Pack"
    Set wrdApp = New Word.Application

    With wrdApp
        .Visible = True
        Set wrdDoc = .Documents.Open("C:\Users\Admin\Desktop\" + sFile + ".doc")
    
    .Selection.Find.ClearFormatting
    .Selection.Find.Replacement.ClearFormatting
    
    sInput(0) = "C2"
    sInput(1) = "C3"
    sInput(2) = "C8"
    sInput(3) = "C9"
    sInput(4) = "C10"
    sInput(5) = "C11"
    sInput(6) = "C12"
    
    sOutput(0) = "NAME1"
    sOutput(1) = "NAME2"
    sOutput(2) = "ADD1"
    sOutput(3) = "ADD2"
    sOutput(4) = "ADD3"
    sOutput(5) = "ADD4"
    sOutput(6) = "ADD5"
    
    For i = 0 To UBound(sInput) - 1
    
      With .Selection.Find
        .Text = sOutput(i)
        .Replacement.Text = Range(sInput(i))
        .Forward = True
        .Wrap = wdFindContinue
        .Format = False
        .MatchCase = False
        .MatchWholeWord = False
        .MatchWildcards = False
        .MatchSoundsLike = False
        .MatchAllWordForms = False
        .Execute Replace:=wdReplaceAll
      End With
    
    Next
    
    End With
    
    'wrdDoc.PrintOut

    'wrdDoc.Close False
    
    MsgBox "DM Pack Created!" & vbCrLf & vbCrLf & "Please Check/Save/Print the Letter!"
    
    'wrdApp.Quit False
    
    Set wrdDoc = Nothing
    Set wrdApp = Nothing
    
    Application.Cursor = xlDefault
    Application.StatusBar = "DM Pack Created!"
    Application.StatusBar = False
    
    Application.ScreenUpdating = True
    Application.EnableEvents = True

End Sub
Works perfectly, what is the advantage of yours except cleaner code? It seems to run at the same speed.

Also I don't see in your code where Cell C is stated... You keep posting your code and I would use this but I see no difference as yet but im probably missing the obvious.