[support] Where are services resources files to be saved at?

Hi : I'm completely new to drupal, but have been doing CGI and web development for 17 years, the last 12 on *nix workstations and servers. Using drupal 7.16 on OS X 10.7 I am viewing a tutorial on creating services at http://drupal.org/node/783460 It is very thorough, but strangely, the tutorial makes no reference to where the services resoure files are to be saved/stored at. Can anyone please tell me where to save those files? thanks -- Tim tim at tee jay forty nine dot com or akwebsoft dot com http://www.akwebsoft.com