people think that no one is allowed into the North but actually u are all u have to do is go to the North korean building in beijing and get a North korean Visa and then u can go to North korea.
I have been to North korea before with some friends and i even made a website of our tour in the North.
here is the link to my website tour in North Korea
http://1stopkorea.com/index.htm?nk-trip6-dmz.htm~mainframe
scroll down and u will find links that will take u to the shops, schools, hotels and circle in North korea.