Well I use Themepark to make it square? So otherwise it is just the one I shared with iApache. AIM or MSN me and maybe I can help you farther, but I use SL so Idk how much help I'll be but I can try (:
Here is how I got the search bar... [link] depending on what your using it will probably show up capsule shaped. Inorder to change that you have to use Themepark 4. If you need more help send me a note, or message me on MSN or AIM.
I don't have permission to share the finder Icon, all the other icons except the trash are by Delta909 the trash icon can be found in my favorites, along with a lot of other great icons, you might enjoy.