It's kludgy, but something like this would be. you can put a
Worksheet_SelectionChange event into the sheet module to watch what cell you were in LAST and force Excel to select the next cell in a "Map" you create.
Code:
Option Explicit
Dim Prior As Range
Private Sub Worksheet_SelectionChange(ByVal Target As Range)
If Prior Is Nothing Then
Range("A1").Select
Set Prior = Selection
Exit Sub
End If
Application.EnableEvents = False
Select Case Prior.Address
Case "$A$1", "$A$2", "$A$3", "$A$4", "$A$5", "$A$6"
Prior.Offset(1).Select
Set Prior = Selection
Case "$A$7"
Range("B1").Select
Set Prior = Selection
Case "$B$1", "$B$2", "$B$3", "$B$4", "$B$5", "$B$6"
Prior.Offset(1).Select
Set Prior = Selection
Case "$B$7"
Range("A10").Select
Set Prior = Selection
Case "$A$10", "$A$11", "$A$12", "$A$13", "$A$14", "$A$15", "$A$16"
Prior.Offset(1).Select
Set Prior = Selection
Case "$A$17"
Range("B10").Select
Set Prior = Selection
Case "$B$10", "$B$11", "$B$12", "$B$13", "$B$14", "$B$15", "$B$16"
Prior.Offset(1).Select
Set Prior = Selection
Case "$B$17"
Range("A1").Select
Set Prior = Selection
End Select
Application.EnableEvents = True
End Sub