When I run the following code: (InsertNew inserts several rows into the database)

        using (TransactionScope tc = new TransactionScope())
        {
            ETMR.InsertNew(ETMRList);

            tc.Complete();
        }

I get the following error:

Server Error in '/' Application.

---

The transaction has already been implicitly or explicitly committed or aborted (Exception from HRESULT: 0x8004D00E)

Line 690:            {
Line 691:                sqlCmd.Connection = cn;
Line 692:                cn.Open();
Line 693:                Object returnobject = sqlCmd.ExecuteScalar();
Line 694:                return returnobject;

HI ,

Not Like windows server, "distributed transaction coordinator " service in windows xp will not be started automaticly ,

so you need to start that service , go to control panel , adminsitrative tools , services , and navigate to that service , then start it ...