You can't go strait to the IP as they're named based virtual hosts. If you put it in your host file and reboot, it should work. The "hi" page is actually being served by the right server, i beleive. I had issues until i put the last dot on the end so it looks like:
66.219.41.221 empeg.comms.net.
but that shouldn't be necessary. Mozilla did require a reboot before it would work, while IE worked immediatly.

Matthew