Greetings Friends

I and my colleague will go to Pyongyang via Beijing.
We will arrive to Beijing airport from Dubai(UAE) on 07 Nov 2010 at 23:00 and our next flight to Pyongyang is the next day 14:00 !!!
we need to stay one night in China but we do not know where and how?

- Is the Beijing airport open 24 hours?
- If we can stay at airport whole night or we have to pass the immigration and go to city for hotel etc.?
- Is there any hotel in transit area where we can stay for a night there?
- In the case that we must go to city how we can get the visa?

Waiting for your kind response.

Moosa Bakhshaei