Problem with .htaccess

I just installed WordPress on my desktop and I’m having problems with getting the permalinks to work (error 404 all the time). I’m running Apache 2.0.49, PHP 4.3.6 and WP 1.2-mingus. My .htaccess file is:

RewriteEngine On
RewriteBase /wordpress/
RewriteRule ^archives/category/(.*)/(feed|rdf|rss|rss2|atom)/?$ /wordpress/wp-feed.php?category_name=$1&feed=$2 [QSA]
RewriteRule ^archives/category/?(.*) /wordpress/index.php?category_name=$1 [QSA]
RewriteRule ^archives/author/(.*)/(feed|rdf|rss|rss2|atom)/?$ /wordpress/wp-feed.php?author_name=$1&feed=$2 [QSA]
RewriteRule ^archives/author/?(.*) /wordpress/index.php?author_name=$1 [QSA]
RewriteRule ^archives/([0-9]{4})?/?([0-9]{1,2})?/?([0-9]{1,2})?/?([_0-9a-z-]+)?/?([0-9]+)?/?$ /wordpress/index.php?year=$1&monthnum=$2&day=$3&name=$4&page=$5 [QSA]
RewriteRule ^archives/([0-9]{4})/([0-9]{1,2})/([0-9]{1,2})/([_0-9a-z-]+)/(feed|rdf|rss|rss2|atom)/?$ /wordpress/wp-feed.php?year=$1&monthnum=$2&day=$3&name=$4&feed=$5 [QSA]
RewriteRule ^archives/([0-9]{4})/([0-9]{1,2})/([0-9]{1,2})/([_0-9a-z-]+)/trackback/?$ /wordpress/wp-trackback.php?year=$1&monthnum=$2&day=$3&name=$4 [QSA]
RewriteRule ^feed/?([_0-9a-z-]+)?/?$ /wordpress/wp-feed.php?feed=$1 [QSA]
RewriteRule ^comments/feed/?([_0-9a-z-]+)?/?$ /wordpress/wp-feed.php?feed=$1&withcomments=1 [QSA]

I checked with php_info() and mod_rewrite is running so I don’t think that is the problem.
What is wrong ???
Oh, WordPress is installed on a /wordpress/ dir (like in https://myserver.com/wordpress/)… don’t know if it makes any difference.