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[Edit: you can probably ignore this as two others posted practically the same thing at the same time
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Is there a reason you want to edit those files? Normally you shouldn't -- these files are created by the smarty template engine used by XOOPS (templates_c holds the templates that have been "compiled" from smarty syntax to regular PHP files). Files in templates_c may be updated whenever you install/update a module. Edit the smarty templates instead.
(Probably your ISP has permissions set so that only the webserver process (e.g. httpd) can read/write those files, so they are not accessible. From my own experience, unix (linux) should have no problems with those file names.)
