As I know , you can not copy your contacts from the iPhone (3GS) to SIM card, but you can [http://www.iphone-ipad-recovery.com/iphone-ipad-ipod-transfer.html|transfer your data], including photo, songs, videos and playlist and more. The program allows you to back up and restore all of your iPod, iPhone, iPad or iPod Touch content like your favorite songs, videos, photos, play lists and more.
If you want to protect your data, you can try to use [http://www.iphone-ipad-recovery.com/iphone-to-mac-transfer.html|iPhone transfer tool].
Good luck!