Are you talking about the toolbars in Internet Explorer? If you are using 7 or 8 you should be able to right click next to the tabs and see the toolbar options. Most people have the menu bar and status bar visible but if you want any of the explorer bars you can first unhide the menu bar and then select view -> explorer bar and the submenu will have your options.
If you installed additional toolbars like the Yahoo toolbar that should also show as an option but to be honest I never install those and recommend others don't either. They just use up resources and in many cases cause unintentional problems.