INDIRECT ref. to another file ?

Not too sure but try this excellent routine
from J Walkenback's site (?? I think) ,he's the BEST.

A VBA Function to Get a Value From a Closed File

VBA does not include a method to retrieve a value from a closed file. You can, however, take
advantage of Excel's ability to work with linked files.

This tip contains a VBA function that retrieves a value from a closed workbook. It does by calling
an XLM macro.

The GetValue Function

The GetValue function, listed below takes four arguments:

path: The drive and path to the closed file (e.g., "d:\files")
file: The workbook name (e.g., "99budget.xls")
sheet: The worksheet name (e.g., "Sheet1")
ref: The cell reference (e.g., "C4")



Private Function GetValue(path, file, sheet, ref)
' Retrieves a value from a closed workbook
Dim arg As String

' Make sure the file exists
If Right(path, 1) <> "\" Then path = path & "\"
If Dir(path & file) = "" Then
GetValue = "File Not Found"
Exit Function
End If

' Create the argument
arg = "'" & path & "[" & file & "]" & sheet & "'!" & _
Range(ref).Range("A1").Address(, , xlR1C1)

' Execute an XLM macro
GetValue = ExecuteExcel4Macro(arg)
End Function

Using the GetValue Function

To use this function, copy the listing to a VBA module. Then, call the function with the appropriate
arguments. The Sub procedure below demonstrates. It simply displays the value in cell A1 in
Sheet1 of a file named 99Budget.xls, located in the XLFiles\Budget directory on drive C:.

Sub TestGetValue()
p = "c:\XLFiles\Budget"
f = "99Budget.xls"
s = "Sheet1"
a = "A1"
MsgBox GetValue(p, f, s, a)
End Sub

Another example is shown below. This procedure reads 1,200 values (100 rows and 12 columns)
from a closed file, and places the values into the active worksheet.

Sub TestGetValue2()
p = "c:\XLFiles\Budget"
f = "99Budget.xls"
s = "Sheet1"
Application.ScreenUpdating = False
For r = 1 To 100
For c = 1 To 12
a = Cells(r, c).Address
Cells(r, c) = GetValue(p, f, s, a)
Next c
Next r
Application.ScreenUpdating = True
End Sub