How do I turn off these stupid warning dialog boxes?

Question

I have a bunch of files with incorrect or missing extensions, in this case they're all just .jpg files. Each time I add the ".jpg" extension I get a dialog box that tells me the obvious:
"*Are you sure you want to add the extension ".jpg" to the end of the name?*
If you make this change your document may open in a different application."
Duh. That's exactly why I'm adding the extension.
How do I turn this stupidity off?
Thanks!

Answer 1

Didn't see it in my 10.4.11 on iMac G4 17 1.25 computer.
But if you change an image or file prefix, you usually get
a notice that by changing one of them, a different app may
be required to open or view it (where possible to do so.)
{If the existing prefix is hidden by Finder preference, you
will get a notice if you try to add another or same, again.}
My 10.5.8 on Mini G4 1.5GHz has some other setting(s.)
Some are better than Tiger, others less helpful.
However, that one is off; while my iMac has been running
about 164 days, 5 hours and 50 minutes without a restart.
Anyway, it's still cold/darker outside. Must be winter.
Good luck & happy computing!