[BlowFish]

Stalor do you want it as a trigger chart (I.e. faster) or to be a similar speed to the 15 minute? In any case get a rough idea of the total ticks for a day and then divide by 6.5 * 4. Thats 6.5 hours * 4 15 minute bars an hour and will give a similar length bar to the 15 minute. Divide by a further 5-7 to get a faster 'trigger chart'. From memory 2000 tick was roughly equal to 15 minutes but I think you will need double that nowadays.