Apple may have added multitasking into iOS 4, but it isn’t true multitasking. What if you want something a little more versatile? Or hey, maybe like me, you’re running older hardware which according to Apple “doesn’t support multitasking”, or even an iPad which doesn’t have iOS 4 yet. At any rate, I would highly recommend you check out Backgrounder.
Here’s how to install and configure Backgrounder.