Batch rename?
 

Is there any program for WinXP that will let me do a batch rename of file extensions?

what about the command prompt (start, run, type "cmd"):

cmd:\>rename *.jpeg *.jpg

makes all .jpeg files in that folder .jpg (e.g. "test.jpeg" -> "test.jpg")

also works with copy

also, you can open notepad, write:
rename *.jpeg *.zip (for example)
save it as rename.bat, move it to the folder where the files are and double click it.
You have just writed your very own batch rename program :)

if the above suggestions don't work, try this free app called UltraRenamer: http://bimbo.fjfi.cvut.cz/~brousil/software.php.

it's worked great for me.

here's another freeware rename util that i've used for a while, i like it.

Linky