Enable Multi-Tasking & Wallpaper on iOS 4/ OR USE zToggle Frm Cydia -  iTouch (2nd Gen)

Alternate: From cydia download: zToggle this app will allow you to enable multi-tasking and background Requirements: Must have iTouch 2nd Gen which is already jailbroken. -Cydia - and iFile ' [ iFile can be found in Cydia's Store] [Guide:How to do Jailbreak: http://www.youtube.com/watch?v=ut-IATGQp7k ] Once you download iFile, open it, Locate to - System/Libary/CoreServices/SpringBoard.app. Find N72AP.plist Click Edit (Top Corner) Find A Space Anywhere Type the following: (croc)key(croc)homescreen-wallpaper(croc)/key(croc) (croc)true/(croc) (croc)key(croc)mulitasking(croc)/key(croc) (croc)true/(croc) Hit Save And REBOOT device!! ** Remember to make a Back-up before trying it. Try this at your own risk !