Yes, it is possible. Use Phantom Trades.

Read these:
http://zorro-project.com/manual/en/trademode.htm
http://www.zorro-trader.com/manual/en/buylong.htm

Also, the Sierra Chart plugin lets you place Simulated Orders - the orders are only placed at the platform level and never reach the broker.

www.vitaltrades.com - andrew@vitaltrades.com