I am using AutoCad 2004. Lately I have not been able to customize my toolbars. Case in point is that I added the Align icon to the Modify toolbar and worked with it for a full drafting session but when AutoCad was exited and restarted, the Align icon disappeared from the toolbar as if AutoCad did not save it. I have been able to do it a few months earlier on the same PC with the same software.

Is there a setting in AutoCad 2004 that I had hit without knowing?
I know AutoCad 2005 has TBCUSTOMIZE. What about 2004?

Any help is appreciated. Thanks.