No it's not, but you can write your own
Code:
Private Sub Text1_KeyPress(KeyAscii As Integer)

    If IsAlpha(KeyAscii) Then
        MsgBox "alpha"
    End If

End Sub



Public Function IsAlpha(intKey As Integer) As Boolean

    If (intKey > 96 And intKey < 123) Or _
       (intKey > 64 And intKey < 91) Then
        IsAlpha = True
    End If

End Function