I want to thank those of you who responded to my request for assistance.A number of the replies, particularly those that did not editorialize, where useful in that they convinced me that reinstalling the OS is the simplest remedy for the problems.
Let us put this thread to bed and stop wasting backspace. -- Stephen P. Molnar, Ph.D. Consultant www.molecular-modeling.net (614)312-7528 (c) Skype: smolnar1