Pasar TXT con decimales comas a XLS

Hola,
Necesito copiar un txt con valores en decimales  comas (,). En mi código se copian, pero en la planilla me advierte que la celda tiene formato de texto, siendo que son números. Podrías solucionarlo?
datostab.txt:
GENERAL LENG    2    2010    1    3    11,8    2    8    31
GENERAL LENG    2    2010    1    3    11,6    2    8    NULL
GENERAL LENG    2    2010    1    3    11,7    2    8    33
Prioritarios GENERAL LENG    23    23,5    43,6    5,5    23,5    2,5    11,5    1
Prioritarios GENERAL LENG    NULL     11    1,5    2,5    12,5    23,4    3,5    2,4
Macro:
Dim sUltimaHoja As String
Dim CntFilas As Integer
Sub Llenar()
    Set fso = CreateObject("Scripting.FileSystemObject")
    Dim sRuta As String
    Dim sLinea As String
    Dim sHoja() As String
    sRuta = ActiveWorkbook.Path
    Set archivo = fso.OpenTextFile(sRuta + "/datostab.txt", 1)
    Do While Not archivo.AtEndOfStream
        sLinea = archivo.readline()
        sHoja = Split(sLinea, vbTab)
        If UCase(sUltimaHoja) <> UCase(sHoja(0)) Then
            If Trim(sUltimaHoja) <> "" Then
                For i = 1 To 8
                    Suma CntFilas + 1, i, 2
                Next
            End If
            sUltimaHoja = sHoja(0)
            CntFilas = 4
        Else
            CntFilas = CntFilas + 1
        End If
        If Not SheetExist(sUltimaHoja) Then
            Sheets.Add
            ActiveSheet.Name = sUltimaHoja
        End If
        LlenaLinea sUltimaHoja, sLinea, CntFilas
    Loop
    'Para la última hoja
    For i = 1 To 8
        Suma CntFilas + 1, i, 2
    Next
    archivo.Close
    MsgBox "Importado"
End Sub
Sub LlenaLinea(ByVal sHoja As String, ByVal sLinea As String, ByVal nFila As Double)
    Dim columna As Double
    columna = 1
    Sheets(sHoja).Select
    b = Split(sLinea, vbTab)
    For i = 1 To UBound(b)
        Cells(nFila, columna + i) = b(i)
        Cells(nFila, columna + i).Interior.ColorIndex = 6
        Cells(nFila, columna + i) = b(i)
      'Para diseñar celdas
        Dim vaColumna As Integer
        vaColumna = columna + i
           Range(Cells(4, 2), Cells(nFila, vaColumna)).Select
               Selection.Borders(xlDiagonalDown).LineStyle = xlNone
    Selection.Borders(xlDiagonalUp).LineStyle = xlNone
    With Selection.Borders(xlEdgeLeft)
        .LineStyle = xlContinuous
        .Weight = xlThin
        .ColorIndex = xlAutomatic
    End With
    With Selection.Borders(xlEdgeTop)
        .LineStyle = xlContinuous
        .Weight = xlThin
        .ColorIndex = xlAutomatic
    End With
    With Selection.Borders(xlEdgeBottom)
        .LineStyle = xlContinuous
        .Weight = xlThin
        .ColorIndex = xlAutomatic
    End With
    With Selection.Borders(xlEdgeRight)
        .LineStyle = xlContinuous
        .Weight = xlThin
        .ColorIndex = xlAutomatic
    End With
    With Selection.Borders(xlInsideVertical)
'        .LineStyle = xlContinuous
        .Weight = xlThin
'        .ColorIndex = xlAutomatic
    End With
    With Selection.Borders(xlInsideHorizontal)
'        .LineStyle = xlContinuous
        .Weight = xlThin
'        .ColorIndex = xlAutomatic
    End With
    Next
End Sub
Sub Suma(ByVal fila As Double, ByVal columna As Double, ByVal i As Double)
    aa = NumeroALetra(columna + 1)
    aaa = Str(4)
    bbb = "=SUM(" & aa & aaa & ":" & aa & Str(fila - 1) & ")"
    bbb = Replace(bbb, " ", "")
    Cells(fila, columna + 1) = bbb
    Cells(fila, columna + 1).Interior.ColorIndex = 15
End Sub
Function SheetExist(ByVal sSheetName As String) As Boolean
    Dim sHoja As Worksheet
    SheetExist = False
    For Each sHoja In ActiveWorkbook.Worksheets
        If UCase(sHoja.Name) = UCase(sSheetName) Then
            SheetExist = True
            Exit For
        End If
    Next
End...