A while ago I fixed my site and improved the load time. I removed some bad add-ons for WordPress, did some upgrading etc. I just found a nice post on using ISAPI_Rewrite with WordPress so I gave it a shot on my site. I’m using version 2 so I added the following rules to my httpd.ini file.
RewriteRule /([0-9]{4})/([0-9]{1,2})/ /index.php\?year=$1&monthnum=$2 [I,U,O]
RewriteRule /([0-9]{4})/([0-9]{1,2})/(.*)/(feed|rdf|rss|rss2|atom|rss2_comments)/?$ /index.php\?feed=$4&name=$3 [I,U,O]
RewriteRule /([0-9]{4})/([0-9]{1,2})/(.*)/trackback/?$ /wp-trackback.php\?year=$1&monthnum=$2&name=$3 [I,U,O]
RewriteRule /category/(.*)/(feed|rdf|rss|rss2|atom|rss2_comments)/?$ /index.php\?category_name=$1&feed=$2 [I,U,O]
RewriteRule /category/(.*) /index.php\?category_name=$1 [I,U,O]
RewriteRule /author/(.*)/(feed|rdf|rss|rss2|atom|rss2_comments)/?$ /index.php\?author_name=$1&feed=$2 [I,U,O]
RewriteRule /author/?(.*) /index.php\?author_name=$1 [I,U,O]
RewriteRule /([0-9]{4})/([0-9]{1,2})/?(.*) /index.php\?name=$3 [I,U,O]
RewriteRule /feed/(.*) /wp-rss2.php [I,U,O]
RewriteRule /comments/feed/(.*) /wp-commentsrss2.php [I,U,O]
Then I added this to my custom permalink string in wp-admin.
/%year%/%monthnum%/%postname%/
Works great, I suppose it will help with SEO too.