LumoNet PHP Include
This extension lets you include complete external PHP solutions (e.g. message boards or image galleries) into TYPO3. With this extension you are able to select a local PHP script as well as a call a script written in any language on a remote server via a real HTTP request.
See the manual in folder 'docs' or the online version at http://typo3.org for more details about the extension and how to use it.