Please elaborate more on what you're trying to do, and what your network setup consists of (Active Directory settings, domain server specs, operating system versions, client machine specs, group policy objects, etc.) to give us a better idea of what's going on... in other words, "help us help you." We're not mind-readers.
There are many different things in the "Finder bar" -- hard drives, computers, networked shares, favorite folders, etc.Hmm there has to be something because all users on domain have same icons in finder bar ...