Thank you for all your replies. Although I understand the need for backup protection in the event of some major catastrophe, that sort of PC damage has never happened to me. Not that such a thing couldn't happen to me during the next hour, the fact that I've not yet been compromised is probably the reason I posed the question [above]. I think more along the lines of Kado897 and will make an attempt to make certain I don't lose too much data. for instance, during the last week, the only data that has changed has been my checkbook balance (MSExcel) and the addition of some email messages - with the exception maybe of some Window updates.