Follow my advice, and you'll be saving bandwidth almost immediately! At Negabytes.com, you'll learn how to compress and optimize your website to save bandwidth, load faster, save money and provide a better experience for your users.
If your files aren't compressed, you're sending needless bloat over your wires. Tighten up your bytes! Learn techniques and methods here.
If it's not needed, why include it? Here you'll learn of some things you may not have known you can live without.
You've ditched your table layout in favour of CSS... good. But are you still using wasteful wrapper-upon-wrapper techniques? Here's a look at ultra-efficient design, emphasizing the "C" in "CSS".