Pick List

I'm trying to get a form to display a pick list so I can choose a staff name from the whole database and the form will go to that record. In the after update of my combobox I have:

Private Sub STAFF_ID_AfterUpdate()
Dim rst As DAO.Recordset

Set rst = Me.RecordsetClone
rst.FindFirst "LNAME='" & STAFF_ID.Column(1) & "'"
If rst.NoMatch Then
MsgBox "The selected record can not be displayed because it is filtered out. " _
& "To display this record, you must first turn off record filtering.", _
vbInformation
Else
Me.Bookmark = rst.Bookmark
End If
Set rst = Nothing
End Sub
and this works OK except when I try to make it pick on 2 columns I can't get it to work. E.g. if I select Joe Smith it just goes to the first Smith. I thought if I used AND on the findfirst line and put in the first name it would work. What am I doing wrong?

I also need to make it so if I type a letter the list will go to that part of the list but I'm not sure how to do this.