Redirect from a page without the extension?

Apparently one of our websites sits on an IIS server... the problem is that we have a printed mailing going out to our customers which is supposed to point to a specific webpage (ex: www.oursite.com/specialpage.cfm) the problem is that the mailing was printed MINUS the .cfm part.... so a person going to www.oursite.com/specialpage is going to get an error message....unless there is some way to work around it? It was suggested that I would use a redirect? Is this something I have to change on the server itself? Just make a page and redirect? I'd like to do it without bothering the server owner if possible.....?

Just create a folder called specialpage in the root directory, then in that create a file called default.cfm (or whatever the name of the default file is) and set that to redirect to www.oursite.com/specialpage.