uniqueidentifier issue

Hi Im inserting some columns
            cmd.CommandText = str             With cmd                 .Parameters.Add("@id", SqlDbType.UniqueIdentifier).Value = New System.Data.SqlTypes.SqlGuid(Guid.NewGuid().ToString())
.......
 cmd.ExecuteNonQuery()    Response.Write(System.Guid.NewGuid().ToString())

But note the response.write guid value is not same in the database. Not sure wht is the problem
Actually I want open a new window after thee response.wirte and print the record by passing uniqeidentifier record like this http://adddd/print.aspx?id=30924861-5FE6-43E0-A25E-5808B2AFB2A1
Pls suggest.. thanks