I have prepared the info for you. Check this out, it has map and driving directions including what roads to take and what turns to make:
http://maps.google.com/maps?f=d&saddr=Cross+Harbour+Tunnel&daddr=22.275019,114.171842&hl=en&geocode=FYpDVAEdZkLOBg%3B&mra=mi&mrsp=1,0&sz=17&sll=22.275436,114.170458&sspn=0.006235,0.010353&ie=UTF8&ll=22.279566,114.179717&spn=0.006235,0.010353&z=17
In summary, get onto cross harbor tunnel, keep right, when you exit the tunnel, continue to keep right and get onto the bridge, make yourself look like go to Happy Valley. When you have passed Elizabeth Building, then keep the left lane and get ready to leave the bridge.
Don't take the first exit (i.e. the Times Square exit). Then take the 2nd exit (i.e. the Happy Valley exit). Make sure you take this exit. If you have missed this exit, you will end up go to Aberdeen, so, drive slow.
After exit from the bridge, keep right, and turn right, get onto Wong Nai Chung road. Then keep right and you will end up get onto Queen's Road East. A few blocks then you will see Wu Chung House and then Hopewell Centre.
The above link shows you the map and the driving direction. Check that out.