I'm having a problem with .php files - every time I try to view them in an Internet browser (I've tried Internet Explorer and Firefox), it asks me to download it (with MIME type "application/octec" or similar), rather then viewing it. I can see .php files on the Internet fine, but locally (such as C:/file.php), I'm asked whether I want to download or open the file (choosing to open the file in IE or Firefox results in the download or open message again). I presume this is because my .php associations have been overwritten at some point. I've created test files (with plain text, HTML code, and PHP code) with .php extensions, and all of them suffer the same problem, whether I access them from my hard drive (C:/), localhost or my IP. Any ideas what the problem could be?