How to deploy an image to a smaller hard drive on a virtual machine?

Hi, I'm very new to Altiris. We are currently using Altiris DS 7.1 SP2 in a school environment. I have created a disk image(x64) on a 500GB hard disk which has three partitions(39MB OEM partition, 11GB system recovery partition, and 470GB OS partition).

Now I want to use it as a master image and deploy it to another virtual machine which has 100GB hard disk(45GB C: drive and 50GB D: drive) on it. Is it possible to achieve this goal? If it is possible, how do I make it happen?

Look forward to your reply. Thanks.