Can anyone suggest a retail broker with whom I can execute OEX index options with. I'll only be doing around 50RT's a month to start with while I test my strategy out in the market. I currently use TradeStation and was going to test my strategy with them but I need to be able to work OSO orders - one sends other, ie: if I get a fill on my entry, my exit gets sent. TradeStation say this order functionality should be in service pack 1 but its taking too long to get this update. Commissions need to be around TS rates - $1 per side. Any suggestions will be appreciated.