die nadel 0 Newbie Poster

Dim cb As New OleDb.OleDbCommandBuilder(da)

ds.Tables("me").Rows(inc).Item(2) = txtFirstName.Text
ds.Tables("me").Rows(inc).Item(3) = txtLastName.Text

da.Update(ds, "me")

Im getting a hard time on updating the database, What should I do to update or even add to the database.
The code above is what I use but still it gives me an error.
Please help. Im just new in using VB.net.
Thanks.