Victor
Codigo simples para utilizar um select
Dim sql as string = Select * From Tabela
Dim cnn as OledbConnection = New OledbConnection(str_conexao)
Dim cmd as OledbComand = New OleDbComand(sql, cnn)
Dim dr as OledbDataReader
cnn.open
dr = cmd.ExecuteReader
E desta maneira que vc trabalha com comando SQL texto.
Falow
Alan