Use:

Sub takemethere()
v = ActiveCell.Value
Set w = ActiveSheet
Sheets("details").Activate
n = Cells(Rows.Count, "C").End(xlUp).Row
For i = 1 To n
If Cells(i, "C").Value = v Then
Cells(i, "C").Select
Exit Sub
End If
Next
w.Activate
MsgBox (v & " not found")
End Sub


Click on the cell with the client number and run the macro above. The macro
goes to a sheet named "details" and looks in column C for that client number.
If the client number is found, that cell is selected. If the client number
is not found, a warning is issued.


You must substitute the proper tab name for "details" and the proper column
for column C.

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Gary''s Student - gsnu200767