Users who would like to get this Charms Bar in Windows XP, Vista, and Windows 7 can now download a new skin for RocketDock. PeterRollar, a deviantart member, has created Windows 8 DP Charms Bar style skin for RocketDock.
How to install it:
Step 1: Download RocketDock from here. It’s a free application launcher for Windows. Run the setup file and then follow the on-screen instructions to complete the installation.
Step 2: Download Charms Bar skin RAR file from here. Extract the skin file, place Charmbar Transparent folder in the skins folder of Rocket Dock. That is, move Charmbar Transparent folder to C:\Program Files\RocketDock\Skins. If you are on a x64 version of Windows, copy the folder to C:\Program Files (x86)\RocketDock\Skins folder.
Step 3: Replace the default Icons folder present in Skins folder with the Icons folder that you have just obtained by unzipping the skin file.
Step 4: Place settings.ini file in C:\Program Files\RocketDock folder. Again, x64 users need to place the same file in C:\Program Files (x86)\RocketDock folder.
Step 5: Launch RocketDock program. Go to Dock Settings, select Style in the left-pane, and then select Charmbar Transparent from the drop down list. Click Ok button to set the new skin. You are done!