mod_rewrite - PHP: $_GET not complete

[adexerlay]

I have the following mod_rewrite:\[code\]Options +FollowSymLinksRewriteEngine OnRewriteRule ^register index.php?page=register\[/code\]The url looks like this: \[code\]http://domain.com/register?param=foo&paramtwo=bar\[/code\]If I now print $_GET in PHP I get this: \[code\]Array ( [page] => register )\[/code\] but the other params aren't set. Must I change someting at the mod_rewrite to get them?