(NOTE: Make sure you read the comments for this post, as there's a better way to get around the 64-bit/32-bit problem without having to compile things. --Tom)
.htaccess, mod_rewrite on GoDaddy
Even though GoDaddy supports mod_rewrite, there are some definite peculiarities about their setup, with regards to .htaccess and PHP execution. Hopefully the observations I've made in this article will be of help if you're coming across the same problems I was.