yeah float has everything up to Aug 2008, so i was just looking to fill in thhe time frame from [aug 08 to now], at this stage im still just playing around with amibroker and reading the forum/books, etc.
also, regarding backtesting, i would of thought a year[or less] would show more accurate results of the likely outcomes of your trades in the near future, especially in this environment. although i can see it would be prudent to test in all conditions.
however i havent looked into system testing much at all.