You must edit your .htaccess file, or create one if one does not already exist. This article about fixing the 'long lines' problem in the .htaccess file will help you find and edit it.
mod_rewrite
To enable mod_rewrite, paste this code into your .htaccess:
| RewriteEngine On |
mod_spelling
To enable mod_spelling, paste this code into your .htaccess:
| CheckSpelling On |
