backtesting - where to find old data

[Daveo]

I'm looking to backtest a betting system. I've been using ESPN's website and the old odds on SBR to go through old NBA seasons. It's tedious.

Is there a better/faster/more efficient way to backtest a system? A better source of old data for old seasons?

Thanks

Daveo

[Delicious]

I dont know if this is any good but might be worth looking into.

http://www.gamblersbookclub.com/Book/Sports___Betting/Software/3523-PRO_BASKETBALL_DATABASE