Every shortcut to a program has an Icon assigned to it. if you notice the android icons have different names. this is normal. From what I can see they look like shortcuts to websites.
Samsung GT I9000 User Manual Switch To The Silent Mode Change Your Ringtone
The link above is the manual on the Samsung and the page that you need to read and follow.
Select a wallpaper for the idle screen
1 In Idle mode, press [
2 Select an image.
3 Save or Set wallpaper.
Select
Samsung is not responsible for any use of default
images or wallpapers provided on your device.