mod_rewrite not working

[Esra]

Hi all

i have this .htaccess

RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-F
RewriteRule ^([-_!*$@~:.a-zA-Z0-9]+)$ http://buddy.gethost.nl/profile.php?username=$1

i get a 403 error
what am i doing wrong?
greetz Edwin

[Vertigo]

give this a go....



RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-F
RewriteRule ^([-_!*$@~:.a-zA-Z0-9]+)$ profile.php?username=$1