From: Daniel Piechnick
Hi Timko. Yes, you can put as many colours as you like on the Gradient Tool. If you're in Photoshop 6.0 or 7.0, click on the Gradient Tool icon. A little bar should appear at the top left of the screen, the same colours as the Gradient. Click on this, and the Gradient Options should appear. On the bar at the bottom of this window, you can alter your gradient by putting in "tabs" and changing their colour.