Right Click on this Flag image:

And Left Click on Save Picture As...

Place it where you can find it.

I suggest \My Documents\My Pictures Folder.

Left Click Save

Left Click Start.

Left Click on Control Panel

Double Left Click on Display

Left Click on Screen Saver Tab

Left Lick on the Down Arrow

From the Drop Down Menu Left Click on 3D Flying Objects

Left Click on Settings

Left Lick on the Down Arrow

From the Drop Down Menu Left Click on Textued Flag

And Left Click on Texture

Left Click on My Documents

Double Left Click on My Pictures

Double Click USFlag.bmp

Left Click Ok

Left Click on Preview

Left Click Apply

Left Click Ok

You are Done