just a quicky ... I hav had problems in the past with converting types.

Trouble is I'm a sharper

Sometimes the conversion (int)adouble; will fail , whereby
Convert.ToInt32(adouble); will work  ... what is the equivalent in VB ?

If GetString90) is an autoincrement in db then shouldn't you be using an integer
version ? at a guess myDataReader.GetInt32() or GetValue() or something ?

Once upon a time I used the following
(Convert.ToDecimal(reader.GetValue(1))*(decimal)(reader.GetValue(2))).ToString("\
N")