I think ensign have playback feature let you play with historical data http://www.ensignsoftware.com/faq/help.htm
also tradetrek http://tradetrek.com/home/productsServices.asp
has chart walker feature let you trade history data.
he offers free trial live call for 2 weeks, tried it, wasn't impress, didn't subscribe to it.
Niha: is DTI http://www.daytradingschool.com/ legit. Folks, this would be DTI not DTU, don't blame me if you got mix up.
If and when I trade 100 lots I will be sure to look you up. As far as IB add-on, I think others already done it... for free or little money.
free http://www.bracket-trader.com/index.html
$30 suggestion http://sling.to/autotrader/
ps. look like my bid is in overbought territory.