I have been running the bitnami WordPress stack to run WordPress locally for quite some time. I absolutely love it and strongly recommend it for anyone obsessed with WordPress. Download it and a few clicks and you have a stable local development/testing environment up and running. However, on my last installation it was really slow. Took me a while to figure out but it seems Windows 7 has some problems resolving “localhost”. If you have the same issue, check wp-config.php to make sure it’s pointing to 127.0.0.1 instead of localhost.