tool bar icons

You need to supply your Quicken version year and release [Such as Q2008 Premier, R5]. And in most cases, you need to be on the most recent release of your version.

If you are saying that your entire toolbar is missing (rather than just the icons you recently added), then it sounds like you have one of the newest versions of Quicken, and that you have set the option to "Maximize my register view". For that, see:

Edit > Preferences > Register

and uncheck the box labelled "Maximize my register view".

You can toggle between the regular view and the maximized view any time by pressing the F11 key; regardless of how you have it set (using the F11 key) when you exit Quicken, the next time you run Quicken, your view will be what you have specified in your "Preferences".