Becky,

The skin is the look of NT. The colors and pictures that are in the background.

Scroll down to the bottom of the page. Wayyyyy down.

At the bottom left side of the colored bar is a box that should say Default Style and have a little arrow pointing down.

Click on the little arrow. A drop down menu will appear with many choices.

Just pick one. You can keep changing them, until you find a style you like the best.

Here is a sample of how to delete a PM. It shows the Tulip and the pink colors