Excel macro to insert certain characters into column

Question

Im currently using this. while this works for now. Im looking to add code that allows me replace everything in that column. Not just limited to only replacing the 0 or one word.

.AutoFilter field:=6, Criteria1:="0"
Columns("F").replace What:="0", Replacement:="Not Needed", Lookat:=xlPart, searchOrder:=xlByRows, MatchCase:=False, Searchformat:=False, ReplaceFormat:=False
Worksheets("Sheet1").AutoFilterMode = False

Answer 1

Sub test()
Dim rg As Range
    With ActiveSheet
        Set rg = .Range("A1", .Range("C" & Rows.Count).End(xlUp)) 'change as needed
            With rg
                .AutoFilter Field:=3, Criteria1:="=0", Operator:=xlAnd 'change as needed
                .Resize(.Rows.Count - 1, .Columns.Count).Offset(1, 0).SpecialCells(xlCellTypeVisible).Value = "X"
                .AutoFilter
            End With
    End With
End Sub