How do I get accurate historical data for backtesting NYSE and TSX stocks?

I would like to back test my strategies using C/C++ script for the following time period: 2005-2011. Will back test NYSE and TSX stocks. How do I get accurate historical data for this?

Who provides the best historical data?

Is historical data available for Canadian stocks (TSX)?

If this question has already been asked, maybe you can direct me to the relevant post, I couldn't find an answer. thanks

 

Depends on what data you need -- EOD, tick data? Financials?

 

I am looking for 10-minute, 30-minute or an hour data, not financials.. If it's 1-minute or 5-minute data, it's even better

 

Come on, guys, anyone? please help. I can't seem a data provider who provides data for 5 or more years...

 

try www.csidata.com