Concurrency Violation

Hi all
i have this

Dim Query = " Select * From Empresas Where EmpresaID = -1"
Da = New SqlClient.SqlDataAdapter(Query, SqlConnection1)
Dim cmdbldr As New SqlClient.SqlCommandBuilder(Me.Da)

when i´m doing the update of my dataset using the DA.Update it throws the
Concurrency Violation Exception , but only do this when i change a columns
of my datatable

so my question is this, i cannot do a CommandBuilder based in a query with a
"WHERE Condition"

can someone help me ???

JSB
ths