1 year 30 Minute Data for Analysis

I am looking for 1 year, 30 minute data (Date, O/H/L/C) for analysis of Nifty, Bank Nifty, Crude, Copper, Gold, Silver and NG.

Any idea where I can get this.? If anybody can provide this data in CSV or Excel format, it would be of great help.

Thanks in advance.

Here you can get 1 minute IEOD data for Nifty and Banknifty....

Thank you Sir. Much appreciated.

BTW What's NAC? - DSM