I use Esignal with IB and there is a fundamental problem which Is likely to be the same for Refco - namely Esignal will not use the IB price feed. The ESignal/IB plug in enables me to initiate trades directly from an advanced chart, but the order-entry options are sparse in comparison to IB's native TWS front end and 'slippage' is more of an issue because the order is based on a non-IB feed. The upshot is that I use ESignal for charting/back-testing etc and TWS for order entry/management and have to pay exchange fees twice for the privilage - Not the best of solutions I guess, but the ESignal integrated trading module is no match for IB's own stuff - yet.
i think Lind Waldock is the futures trade division of Refco. I did not like esignal their customer service was of no help to me when picking a platform and data feeds.