you are serving off of what looks like a DSL connection. Buy FIOS or a T1 if you are concerned about the speed, or just deal
In all seriousness DSL is not designed for hosting, nor is Cable. if you want to host pay for a better connection, or a shared/ dedicated server.
Sorry i couldnt be more helpful.
your other option is to cut down on the complexity of your code and less images and you will see an improvement. the initial responce from your server is decent, but the pages are huge.