It should already be there. If not, it is part of the Standard toolbar.
By default, it is at the top of the arcmap window, beside the black and yellow Add Data button.
Sure, just right click anywhere on the arcmap interface where there isn't anything (blank spot beside a toolbar).
See attached JPG.
You should get a huge list of toolbars. Standard is in there, click it.
Notice that the other toolbars that are active will have checkmarks beside them.
Again - thanks for your reply - I have the standard toolbar active and the scale is not on there as defaulted by the add data button. Apparently some predecessor of mine turned it off or something. :(
I have looked in the customized options to add that 'button' (which I have not found) as well as going through the options on the data frame properties.
This should be fairly simple can anyone please help - Thanks!!!!
You could also try to remove (or rename) normal.mxt. That should reset everything. It should reside somewhere under Documents and Settings - <user> - Application Data.
I'm not sure this will work, but click the arrow at the right of the standard toolbar and select "Customize". If you hover over it, you should see "Toolbar options".
This will open the customize dialog. Select the Toolbars tab and highlight the Standard toolbar. Click the Reset button at right. This will get rid of any custom buttons on the toolbar--it removed my project wizard button, for instance. Hopefully, it will replace the missing control!
I also saw a "Map Scale" control on the Commands tab, Pan/Zoom set, but wasn't able to drop it onto a toolbar, so I don't know if it's the same control or not.