I found a header convertion post in mail arc, and I follow the post to modify the ddraw.pas.
Now I can create surface on WM6 pro , but I cant BitBlt any thing on surface using TPicturre.
Hope someone can give suggestion on how to make it work.

Current example to blit a jpg on DDraw Surface full source and binary is here:
http://cid-b09cde3cb849642d.skydrive.live.com/self.aspx/Public/DDraw%20WMV2.zip