Step 2 - Adding the Basic Gradient
Now we are going to add the base gradient found in the vista logo.

Set your foreground color to #1597d9 and select your Gradient Tool. At the top, be sure to change your gradient preset to Foreground to Transparent (It should look like light blue fading into gray checkers.)

Now, press "Ctrl" and while holding, click the thumbnail of the circle layer you created in step one (You should see a moving marquee outline the circle.) With your Gradient Tool selected, and the preset changed to the settings above, put the cursor at the bottom of the circle, drag it about 70% of the way to the top and let go.