Check out the Lessons tab at www.psrtutorial.com
and you'll find detailed, easy to understand instructions on tuning style files. Plus, I beleive there were a number of Indian styles posted as well under the Styles tab.
Check it out,
PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!