WASHINGTON, D.C.: Until recently, for all of Al Gore's talk about the Information Superhighway, it's the Republicans who have been the savviest wielders of Web power, starting with such notable early efforts as Thomas, the comprehensive Congressional website named for Thomas Jefferson. Now the Democrats are catching up. When the Republicans trotted out their tax calculator to show how their tax cut proposal provides "Relief for Every Taxpayer In Every Stage of Life," the Democrats quickly swung into action with a calculator of their own. The not-so-surprising conclusion: if you're rich, have lots of kids or make most of your money from capital gains, the GOP is looking out for you. If not, maybe you'd better take another look at the Democrat's figures.