Here is one possible route:
You can immediately go to the Disneyland after arriving at HKIA,if you have only a little luggages.It is the nearest one. and it will waste many time to get there from your hotel. After it, I think maybe you can get out earlier to go to your hotel, you can go to Tsim Sha Tsui for shopping and remember to get to Avenue of Star to enjoy SOL in the evening.

The second day, you can take Twen Wan Line to Admiralty and take Bus 629 to Ocean Park, if you want to take star ferry, you can also go to the pier which is near the cross of Canton Road and Salisbury, after arriving at Hong Kong Island, you can walk to Admiralty and take Bus 629. After the trip to Ocean Park, you need to take bus back to Admiralty to take Bus 15 to the Peak, it has double decker bus, remember to sit on the upper decker and enjoy the scenery on the way. Stay on the Peak till night come and you'll see one of the most beautiful night view in the world.
Hope this can help you.

I think it may be a little hurry for you to do so ,many things in two days in Hong Kong. For the must see sites, I recommend the Disneyland and victoria bay. You can select some of others to have a look.

thanks a lot Guys...