It's important to know what kind of server your website is running on - especially when it comes to installing software like a content management system. We ran into this situation this week at Brunello. Here is a quick solution to determine your server details with a simple .php file.
1. Create a file named server-info.php with the following code in it: <? phpinfo() ?>
2. Upload the file to your web server
3. Visit the url of the file http://yourwebsite.com/server-info.php
4. Delete the file after you have determined your server type