Aginaldo se vc utiliza DAO vc usa assim:
Dim DbName As String
Dim Wrk As Workspace
DbName = App.Path & "Banco.mdb"
'indica o banco de dados
Set Wrk = DBEngine.Workspaces(0)
Set BD = Wrk.OpenDatabase(DbName, False, False, ";PWD=Senha")
Se vc utiliza ADO vc usa assim:
Set CON = CreateObject("ADODB.Connection")
Set RS = CreateObject("ADODB.Recordset")
CON.Open "Provider = Microsoft.Jet.OLEDB.4.0;Data Source = " & App.Path & "Banco.mdb;Jet OLEDB:database Password=Senha"
Espero ter ajudado
T+