Dear Bronxteck, 
  
Thanks for your comment.  I just checked the below website that my harddisk is in fact a 4K bytes sector. 
  
http://www.hitachigst.com/internal-drives/mobile/travelstar/travelstar-7k750 
  
Can you explain a little more about the procedure to get around this problem?  How to make EFI partition and make the HD in HSF format?  and how to get a workable bootloader? 
  
I have tried the Chameleon Wizard on my successfully installed 10.6.0 with latest Chameleon in all 4 install options (boot0hfs, boot0md, boot0, update) but the bootloader still did not work.  Later I updated to 10.6.8 update combo with the latest EDP1.9.1.  Then the system crashed and cannot be booted up again even with the D620SLV1.iso CD.  Now, I have to install SL again.  In the past, I used the D620SLV1.iso with SL 10.6.0 installation DVD to install SL.  Once the system was sucessfully installed, all I need to do was to click on the file postinstall.command from D620SLV1 CD to install Chameleon bootloader.  
  
Appreciate your comment. 
  
Best regards, 
FC