There are companies out there (i.e. Akamai) that will clone your website across the world. This is to handle load and improve redundancy.

If you just want to suck down a website by spidering through all the webpages I use the Linux utility wget. I did a quick Google search and there is a port to Windows available.

If it is something quick, I'd be happy to do the wget and email you the website zip'd up.