That is something better left for the webserver. You are assuming all DNS lookups are web related. Some are FTP clients or SSH clients. If you want a web request for yourdomain.com to be forwarded to 111.222.333.444/page.html you have a few options.
The easiest of which is probably to configure apache (or your web server of choice) to automatically send a 301 (Moved permanently HTTP Status) to the requesting browser so that the it will, in turn, retrieve the new page your web server points it to.
See the "Redirect Directive" in this page:
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Mod_alias documentation for Apache 2.0