While it doesn't address your immediate needs, you might want to know that we are working to increase our intraday interval history. Here's the plan:
We have been saving addtional intraday data on US Markets since January, 2002. We are in the process of programming our tick servers to support the additional data and hope to have that finished during Q1 of 2003. Once completed, we should eventually be able to provide 1 year of intraday interval data, with that growing as time passes. Based on our storage estimates, our servers should be able to handle approx 2 years of intraday history.
Thanks,