CheckSpelling On给出了XAMPP服务器错误

Question

Apache error.log：

[Sat Feb 23 02:19:46.233604 2013] [core:alert] [pid 6904:tid 1592] [client ::1:53186] C:/xampp/htdocs/me/.htaccess: Invalid command 'CheckCaseOnly', perhaps misspelled or defined by a module not included in the server configuration, referer: http://localhost/me/

htaccess的：

RewriteEngine On

CheckCaseOnly On
CheckSpelling On

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-l
RewriteRule ^profile/(.*)$ /me/profile.php?username=$1 [QSA,L]
RewriteRule ^(.*)$ /me/index.php?unikpage=$1 [QSA,L]

这会导致服务器错误。我试图使URL区分大小写。怎么做？