Making a tab/worksheet undeletable

Hi,

I have a spreadsheet that needs to be accompanied by some text (namely, legal terms and conditions) on one of the worksheets of the spreadsheet. This information needs to be on a separate worksheet rather than on one of the existing ones. In order to avoid people simply deleting the entire worksheet, is there any way (either an Excel function or an add-on/software I can buy) to do this? I don't think the Protect Sheet or Data Validation functions will stop users deleting the entire worksheet. My knowledge of macro's is very basic though if that's the best solution, I'm happy to go with that though I would worry that users could just select the disable macro's function on opening the spreadsheet and could then delete the entire worksheet.

If anyone out there can help, I'd be very grateful.

Many thanks

Paul