you cannot access hulu from any ip address outside the us... however, when I was in england, i downloaded this program called "block hotspot" that basically masked my ip address and made it look like i was in colorado LOL... I would just activate the program when I needed to go on hulu, and then turn it off when I was done.
I would recommend using the program with firefox as you can download a firefox app called "ad block plus" that prevents the block hotspot program from opening up these pesky pop up ads that cover your whole screen.
both of these programs are free to download and definitely got me through my time in london when i needed my american tv fix!!