Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows NT\RPC]
"RestrictRemoteClients"=dword:00000000

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Rpc\Internet]
"Ports"=hex(7):31,00,30,00,32,00,35,00,2d,00,31,00,30,00,35,00,35,00,00,00,00,\
  00
"PortsInternetAvailable"="Y"
"UseInternetPorts"="Y"

You can create a class/library to wrap the transaction code
Code:

using System;
using System.Data;
using System.Transactions;

namespace BusinessLayer
{
    public class TransactionScopeWrapper : IDisposable
    {
        private TransactionScope _scope = null;

        public TransactionScopeWrapper()
        {
            if (ConfigHelper.UseTransactionScope)
            {
                int timeout = ConfigHelper.TransactionTimeoutMinutes;

                if (timeout == int.MinValue)
                {
                    timeout = 10;
                }

                _scope = new TransactionScope(TransactionScopeOption.Required, new TimeSpan(0, timeout, 0));
            }
        }

        public void Complete()
        {
            if (_scope != null)
            {
                _scope.Complete();
            }
        }

        #region IDisposable Members

        public void Dispose()
        {
            if (_scope != null)
            {
                _scope.Dispose();
            }
        }

        #endregion
    }
}

Usage of the wrapper:

public void CancelAuction(int auctionid)
        {
            using (TransactionScopeWrapper scope = new TransactionScopeWrapper())
            {
                tdsAuction.AuctionDataTable auctionTable = AuctionAdapter.AuctionSelect(auctionid);

                if (auctionTable.Rows.Count > 0)
                {
                    tdsAuction.AuctionRow auctionRow = auctionTable.Rows[0] as tdsAuction.AuctionRow;

                    auctionRow.AuctionStatusID = (int)AuctionStatusEnum.Cancelled;
                    AuctionAdapter.Update(auctionRow);

                    // return the Stock to inventory
                    if (auctionRow.IsAuction)
                    {
                        InventoryData.InventoryReturnLotsCancelAuction(auctionid);
                    }
                    else
                    {
                        InventoryData.InventoryReturnLotsForDeal(auctionid);
                    }
                }

                scope.Complete();
            }
        }