i found one article in wincutomize which can help me and anyone else!
so i made a guide of
How To Convert A Dock To A DX Object
1.open DesktopX Builder
just see this pic.
2.change to the "desktop" tab
3.click new below objects
then a dialouge like this will appear
4.change the picture or appearance
5.change the object type
6.chnge the name
7.press apply
8.right-click and press export...
then a dialouge like this will appear
9.select the type of object you want to export as
10.follow the wizard
done then just use you newly made object!
a little example of mine!
You can download this by clicking here
PS: its RapidShare do you have to wait for your download link
PS: this guide can be also used for converting objectdock files to objects!