To reset the ink levels, you need to wait for one of the colors on the printer to reach zero. This is usually signified by a red "X" on the printer or computer screen. Once you have this happening, all you will need to do is remove and replace the cartridges to reset the ink levels. If you have the button on top of the chips for the CIS, you would peform the same procedure, but instead of removing and replacing the cartridges, you would just hold that reset button down for 5-6 seconds and should allow the ink levels to reset.
Let me know if you have any other questions.