2 Methods to Get Wallpaper for your iPhone
Everybody want to own cool and beautiful wallpaper for their iPhone, iPhone 3G, including the newest iPhone 3GS. Here offers you 2 Methods to get iPhone wallpaper.
1. Free iPhone Wallpaper
There are many free iPhone wallpapers, you can find them on internet and directly download to set as your iPhone Wallpaper. Some are really wonderful and make your iPhone more cool, but unavoidable fewer choices available to us and maybe there is somebody who has the same iPhone Wallpaper.

2. Make Personalized Wallpaper by Yourself.
You might have collected plenty beautiful photos on Mac, such as families, friends, colleagues, and classmates, etc. At this time, you can make your iPhone wallpaper by yourself, the wallpaper will be unique and cool ! Now, we have to meet the problem, how to make iPhone Wallpaper by ourselves? iPhone supports 320*480 pixels, the source photos are likely much larger. In fact , you can make a iPhone wallpaper just for 4 steps.
Step 1: Import
Download iMageFit and install it. Then import the photos which you want to set as your iPhone Wallpaper.
Step 2: Crop
Click "Crop" on the edit toolbar, and make the iPhone Wallpaper
Step 3: Save
Save this cropped image to favorite picture folder.
Step 4: Upload
Connect and uploaded the iPhone Wallpaper to iPhone, then set it as wallpaper.

Also , you can upload them to Flickr, Facebook for sharing with friends. Both above are the methods to get wallpaper for you iPhone, if you want to get more free iPhone Wallpaper, you can go to: Download Free iPhone Wallpaper
Know more details to make wallpaper, you can go to: How to Make iPhone Wallpaper on Mac?