Open an Excel file

I want to open an Excel file from VB. I open Complements,then Visual administrator of data, then File, then Open existing data basis, then Excel. I get error 3170: DAO.Workspace.ISAM instalable not found. Can anyone help me?

i don't really get the question but I usually use this

VB Code:

wbname = "tarif.xls"
        ChDir "C:\Documents and Settings\All Users\Documents\lascombes\tarifs\"
        Workbooks.Open (wbname)