the dock in that picture takes some steps but this is how to do it for free.
1. you must first make the dock
invisible (make sure you back up those files).
2. next you need a program called
geektool.
3. using geektool, make an empty geeklet (basically an empty box with no commands in it).
4. next just mess around with the opacity to get the look you want.
i have something
similar and thats how i did it.
edit: forgot to mention how to change the icons. you can do this one of two ways.
first of all that icon set is called the
kobhens. The gill sans icon set looks like its just a copy of the kobhes. but either one should work.
the easiest alternative to candy bar is is to use
LiteIcon. its FREE!!
other than that you can do what i do and go into the package contents of each individual application you want to change.
its tedious and takes a while but it is 100% effective. sometimes liteicon fails to actually change the icon. but try it first and if it doenst work let me know and i will give you the instructions.