> use a bulk rename program to change the .html to
> cfm, and then change all the links. Is there any way
> I can edit the files in the res folder such that the
> files save directly with a .cfm suffix?
For that you'll have to talk to the developer. 

IMHO, there shouldn't be any extensions in any links on a site.  The server
just returns the default page. That way any page can be easily changed to any
new technology as required without invalidating existing links (including
external ones)