However, Mark Lee, a Clark Whitehill partner, says there is also an opportunity to maximise savings through changes of year-ends and the like. Not that such things are easy to work out. So enter the firm's secret weapon - "Cybertax". A computer program that calculates the best solution, it was originally devised for internal use, but has been sold to several hundred professional firms in less than a year. With a starting price of less than pounds 300, it cuts the work involved in assessing tax options from a week to an hour or two, Clark Whitehill claims. That should get them away from the video games.