VIP Acceleration allows you to have your own dedicated downloading channel. This means that when it's activated, BitComet will take the task with the VIP activated and download it on a private and secure server. After the downloading is finished, you then download the file/folders to your computer. The VIP Acceleration is practically a middle man who gets the downloads at very high speeds which then it delivers it to you.
There are different plans for this option. Use the following URL to know more about them: http://vip.bitcomet.com/