Have you install the summerboard application to customize your Iphone home screen theme? You better install it now because I just found a package of free downloadable Iphone themes for your Iphone. Well if you have installed the summerboard application then you need to follow this instruction to install the free customize Iphone theme :
1. connect your iphone to your pc
2. open WINSCP in order to connect thru lan/wifi to your iphone
3. browse to the /private/var/root/Library/SummerBoard/Themes directory
4. extract the iphonethemes.rar files to a temp directory on your hd
5. browse the themes, and choose whatever you like
6. copy themes directories to your iphone /private/var/root/Library/SummerBoard/Themes directory
7. tap the SMBPrefs icon on your iphone, goto Theme, and pick your favorite theme
Download free Iphone theme package by clicking the image above. The password for the package is S3lkcer@#%$Gda.