If you want a specific folder pinned to the task bar, first unlock the task bar by right clicking on it and then click on unlock.
Again right click on the task bar and go to the toolbars option and select "New ToolBar".
In the new open window, create a new folder and rename it "New". Then keep the folder open.
Go to the folder you want to pin to the task bar. Then create a short cut for that folder.
Copy the short cut and paste it into the "New" folder which was created earlier.
Then click on okay.
This New folder will now be pinned to your task bar and you will be able to access this folder directly from Toolbar.
To remove this computer, just right click on it and select Unpin.