I think SCMagic (http://www.scmagic.org/English/Index.htm) has the data that you're looking for: Available futures in 1min time frame...HSI starting 02/06/2003
You could take a one month subscription to Sierra Chart (or even trial it for a week; its a great product, you might like it ) and then use SC to export their data to text files.
PM me, I will send you txt file. By the way, this market is very volatile, suitable for very experienced traders. Good trading