Here is what I want to do: Rename all the files in the find results with new extension .htm instead of the old extension .cfm. I've spent two hours now searching through the manual and the forum with no results. 
I'm not a programmer and these standard expressions are completely foreign. I've tried commands and that doesn't work. If anyone can tell me what to put in the "old name" and "new name" field so that this will work it would be much appreciated.
Thanks,
Ben
You don't need to use regular expression for that, standard wildcards will do:
Old Name: .cfm
New Name: .htm
If you did want to use regular expression, you would use something like:
[b]Old Name: /b.cfm
New Name: \1.htm
Hey....thanks a million. I thought I'd tried that but guess not.