1. A system for performing trading of non-exchange traded financial instruments comprising: an electronic spreadsheet application, the electronic spreadsheet application containing at least one sheet, the sheet containing an identification of at least one non-exchange traded financial instrument; a Dynamic Data Exchange (DDE) interface coupled to the electronic spread sheet application, the electronic spread sheet application transmitting a subscription request to the DDE interface with respect to the financial instrument; a financial instrument server coupled to the DDE interface; and a trading engine coupled to the financial instrument server, wherein real time data related to the financial instrument is provided to the electronic spreadsheet through the financial instrument server and the DDE interface.